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README.md

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 # SheetJS + React Native Demo
 
-Complete Reproduction of <https://docs.sheetjs.com/docs/demos/mobile/reactnative#demo>
+Complete Reproduction of <https://docs.sheetjs.com/docs/demos/mobile/reactnative#demo>
+
+The demo showcases a number of plugins. They are in different branches:
+
+- ["RNBU" for `react-native-blob-util`](https://git.sheetjs.com/sheetjs/sheetjs-rn/src/branch/RNBU)
+- ["RNFA" for `react-native-file-access`](https://git.sheetjs.com/sheetjs/sheetjs-rn/src/branch/RNFA)
+- ["RNFB" for `rn-fetch-blob`](https://git.sheetjs.com/sheetjs/sheetjs-rn/src/branch/RNFB)
+- ["RNFS" for `react-native-fs`](https://git.sheetjs.com/sheetjs/sheetjs-rn/src/branch/RNFS)
+- ["EXPO" for `expo-file-system`](https://git.sheetjs.com/sheetjs/sheetjs-rn/src/branch/EXPO)
+
+To test a particular branch:
+
+1) Switch to the particular branch.  For example, to switch to RNBU:
+
+```bash
+git checkout RNBU
+```
+
+2) Build dependencies:
+
+```bash
+npm i
+```
+
+### iOS
+
+3) (iOS only) link iOS project
+
+```bash
+cd ios; pod install; cd ..
+```
+
+4) run the development process:
+
+```bash
+npx react-native run-ios
+```
+
+### Android
+
+5) ensure Java 11 is the current version 
+
+6) run the development process:
+
+```bash
+npx react-native run-android
+```
+