diff --git a/index.html b/index.html
index 26dfea2..36fe0cb 100644
--- a/index.html
+++ b/index.html
@@ -36,7 +36,8 @@ Use readAsBinaryString: (when available)
-
+
+
diff --git a/shim.js b/shim.js
new file mode 100644
index 0000000..30740ec
--- /dev/null
+++ b/shim.js
@@ -0,0 +1,343 @@
+// From https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/keys
+if (!Object.keys) {
+ Object.keys = (function () {
+ var hasOwnProperty = Object.prototype.hasOwnProperty,
+ hasDontEnumBug = !({toString: null}).propertyIsEnumerable('toString'),
+ dontEnums = [
+ 'toString',
+ 'toLocaleString',
+ 'valueOf',
+ 'hasOwnProperty',
+ 'isPrototypeOf',
+ 'propertyIsEnumerable',
+ 'constructor'
+ ],
+ dontEnumsLength = dontEnums.length;
+
+ return function (obj) {
+ if (typeof obj !== 'object' && typeof obj !== 'function' || obj === null) throw new TypeError('Object.keys called on non-object');
+
+ var result = [];
+
+ for (var prop in obj) {
+ if (hasOwnProperty.call(obj, prop)) result.push(prop);
+ }
+
+ if (hasDontEnumBug) {
+ for (var i=0; i < dontEnumsLength; i++) {
+ if (hasOwnProperty.call(obj, dontEnums[i])) result.push(dontEnums[i]);
+ }
+ }
+ return result;
+ };
+ })();
+}
+
+// From https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/filter
+if (!Array.prototype.filter)
+{
+ Array.prototype.filter = function(fun /*, thisp */)
+ {
+ "use strict";
+
+ if (this == null)
+ throw new TypeError();
+
+ var t = Object(this);
+ var len = t.length >>> 0;
+ if (typeof fun != "function")
+ throw new TypeError();
+
+ var res = [];
+ var thisp = arguments[1];
+ for (var i = 0; i < len; i++)
+ {
+ if (i in t)
+ {
+ var val = t[i]; // in case fun mutates this
+ if (fun.call(thisp, val, i, t))
+ res.push(val);
+ }
+ }
+
+ return res;
+ };
+}
+
+// From https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/Trim
+if (!String.prototype.trim) {
+ String.prototype.trim = function () {
+ return this.replace(/^\s+|\s+$/g, '');
+ };
+}
+
+// From https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/forEach
+if (!Array.prototype.forEach)
+{
+ Array.prototype.forEach = function(fun /*, thisArg */)
+ {
+ "use strict";
+
+ if (this === void 0 || this === null)
+ throw new TypeError();
+
+ var t = Object(this);
+ var len = t.length >>> 0;
+ if (typeof fun !== "function")
+ throw new TypeError();
+
+ var thisArg = arguments.length >= 2 ? arguments[1] : void 0;
+ for (var i = 0; i < len; i++)
+ {
+ if (i in t)
+ fun.call(thisArg, t[i], i, t);
+ }
+ };
+}
+
+// Production steps of ECMA-262, Edition 5, 15.4.4.19
+// Reference: http://es5.github.com/#x15.4.4.19
+if (!Array.prototype.map) {
+ Array.prototype.map = function(callback, thisArg) {
+
+ var T, A, k;
+
+ if (this == null) {
+ throw new TypeError(" this is null or not defined");
+ }
+
+ // 1. Let O be the result of calling ToObject passing the |this| value as the argument.
+ var O = Object(this);
+
+ // 2. Let lenValue be the result of calling the Get internal method of O with the argument "length".
+ // 3. Let len be ToUint32(lenValue).
+ var len = O.length >>> 0;
+
+ // 4. If IsCallable(callback) is false, throw a TypeError exception.
+ // See: http://es5.github.com/#x9.11
+ if (typeof callback !== "function") {
+ throw new TypeError(callback + " is not a function");
+ }
+
+ // 5. If thisArg was supplied, let T be thisArg; else let T be undefined.
+ if (thisArg) {
+ T = thisArg;
+ }
+
+ // 6. Let A be a new array created as if by the expression new Array(len) where Array is
+ // the standard built-in constructor with that name and len is the value of len.
+ A = new Array(len);
+
+ // 7. Let k be 0
+ k = 0;
+
+ // 8. Repeat, while k < len
+ while(k < len) {
+
+ var kValue, mappedValue;
+
+ // a. Let Pk be ToString(k).
+ // This is implicit for LHS operands of the in operator
+ // b. Let kPresent be the result of calling the HasProperty internal method of O with argument Pk.
+ // This step can be combined with c
+ // c. If kPresent is true, then
+ if (k in O) {
+
+ // i. Let kValue be the result of calling the Get internal method of O with argument Pk.
+ kValue = O[ k ];
+
+ // ii. Let mappedValue be the result of calling the Call internal method of callback
+ // with T as the this value and argument list containing kValue, k, and O.
+ mappedValue = callback.call(T, kValue, k, O);
+
+ // iii. Call the DefineOwnProperty internal method of A with arguments
+ // Pk, Property Descriptor {Value: mappedValue, : true, Enumerable: true, Configurable: true},
+ // and false.
+
+ // In browsers that support Object.defineProperty, use the following:
+ // Object.defineProperty(A, Pk, { value: mappedValue, writable: true, enumerable: true, configurable: true });
+
+ // For best browser support, use the following:
+ A[ k ] = mappedValue;
+ }
+ // d. Increase k by 1.
+ k++;
+ }
+
+ // 9. return A
+ return A;
+ };
+}
+
+// From https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/indexOf
+if (!Array.prototype.indexOf) {
+ Array.prototype.indexOf = function (searchElement, fromIndex) {
+ if ( this === undefined || this === null ) {
+ throw new TypeError( '"this" is null or not defined' );
+ }
+
+ var length = this.length >>> 0; // Hack to convert object.length to a UInt32
+
+ fromIndex = +fromIndex || 0;
+
+ if (Math.abs(fromIndex) === Infinity) {
+ fromIndex = 0;
+ }
+
+ if (fromIndex < 0) {
+ fromIndex += length;
+ if (fromIndex < 0) {
+ fromIndex = 0;
+ }
+ }
+
+ for (;fromIndex < length; fromIndex++) {
+ if (this[fromIndex] === searchElement) {
+ return fromIndex;
+ }
+ }
+
+ return -1;
+ };
+}
+// Based on https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/isArray
+
+if (! Array.isArray) {
+ Array.isArray = function(obj) {
+ return Object.prototype.toString.call(obj) === "[object Array]";
+ };
+}
+
+// https://github.com/ttaubert/node-arraybuffer-slice
+// (c) 2013 Tim Taubert
+// arraybuffer-slice may be freely distributed under the MIT license.
+
+"use strict";
+
+if (typeof ArrayBuffer !== 'undefined' && !ArrayBuffer.prototype.slice) {
+ ArrayBuffer.prototype.slice = function (begin, end) {
+ begin = (begin|0) || 0;
+ var num = this.byteLength;
+ end = end === (void 0) ? num : (end|0);
+
+ // Handle negative values.
+ if (begin < 0) begin += num;
+ if (end < 0) end += num;
+
+ if (num === 0 || begin >= num || begin >= end) {
+ return new ArrayBuffer(0);
+ }
+
+ var length = Math.min(num - begin, end - begin);
+ var target = new ArrayBuffer(length);
+ var targetArray = new Uint8Array(target);
+ targetArray.set(new Uint8Array(this, begin, length));
+ return target;
+ };
+}
+
+// https://github.com/davidchambers/Base64.js
+// (C) 2015 David Chambers
+// Base64.js may be freely distributed under the Apache 2.0 License.
+;(function () {
+
+ var object =
+ typeof exports != 'undefined' ? exports :
+ typeof self != 'undefined' ? self : // #8: web workers
+ $.global; // #31: ExtendScript
+
+ var chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
+
+ function InvalidCharacterError(message) {
+ this.message = message;
+ }
+ InvalidCharacterError.prototype = new Error;
+ InvalidCharacterError.prototype.name = 'InvalidCharacterError';
+
+ // encoder
+ // [https://gist.github.com/999166] by [https://github.com/nignag]
+ object.btoa || (
+ object.btoa = function (input) {
+ var str = String(input);
+ for (
+ // initialize result and counter
+ var block, charCode, idx = 0, map = chars, output = '';
+ // if the next str index does not exist:
+ // change the mapping table to "="
+ // check if d has no fractional digits
+ str.charAt(idx | 0) || (map = '=', idx % 1);
+ // "8 - idx % 1 * 8" generates the sequence 2, 4, 6, 8
+ output += map.charAt(63 & block >> 8 - idx % 1 * 8)
+ ) {
+ charCode = str.charCodeAt(idx += 3/4);
+ if (charCode > 0xFF) {
+ throw new InvalidCharacterError("'btoa' failed: The string to be encoded contains characters outside of the Latin1 range.");
+ }
+ block = block << 8 | charCode;
+ }
+ return output;
+ });
+
+ // decoder
+ // [https://gist.github.com/1020396] by [https://github.com/atk]
+ object.atob || (
+ object.atob = function (input) {
+ var str = String(input).replace(/[=]+$/, ''); // #31: ExtendScript bad parse of /=
+ if (str.length % 4 == 1) {
+ throw new InvalidCharacterError("'atob' failed: The string to be decoded is not correctly encoded.");
+ }
+ for (
+ // initialize result and counters
+ var bc = 0, bs, buffer, idx = 0, output = '';
+ // get next character
+ buffer = str.charAt(idx++);
+ // character found in table? initialize bit storage and add its ascii value;
+ ~buffer && (bs = bc % 4 ? bs * 64 + buffer : buffer,
+ // and if not first of each 4 characters,
+ // convert the first 8 bits to one ascii character
+ bc++ % 4) ? output += String.fromCharCode(255 & bs >> (-2 * bc & 6)) : 0
+ ) {
+ // try to find character in table (0-63, not found => -1)
+ buffer = chars.indexOf(buffer);
+ }
+ return output;
+ });
+}());
+
+
+// From https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/toISOString
+if (!Date.prototype.toISOString) {
+ (function() {
+
+ function pad(number) {
+ if (number < 10) {
+ return '0' + number;
+ }
+ return number;
+ }
+
+ Date.prototype.toISOString = function() {
+ return this.getUTCFullYear() +
+ '-' + pad(this.getUTCMonth() + 1) +
+ '-' + pad(this.getUTCDate()) +
+ 'T' + pad(this.getUTCHours()) +
+ ':' + pad(this.getUTCMinutes()) +
+ ':' + pad(this.getUTCSeconds()) +
+ '.' + (this.getUTCMilliseconds() / 1000).toFixed(3).slice(2, 5) +
+ 'Z';
+ };
+
+ }());
+}
+
+// note: MDN shim will not work in IE
+if(typeof Uint8Array !== 'undefined' && !Uint8Array.prototype.slice) Uint8Array.prototype.slice = function(start, end) {
+ if(start < 0) { start += this.length; if(start < 0) start = 0; }
+ if(start >= this.length) return new Uint8Array(0);
+ if(end == null) end = this.length;
+ if(end < 0) { end += this.length; if(end < 0) end = 0; }
+ if(end > this.length) end = this.length;
+ var out = new Uint8Array(end - start);
+ while(start <= --end) out[end - start] = this[end];
+ return out;
+};