update readme

Author: iossocket

README.md

@@ -1,5 +1,13 @@
 ### split js bundle
 
+#### How to run it
+
+1. `npm ci`
+2. `cd ios && pod install`
+3. Open iOS project by Xcode and run
+
+#### Related script
+```
 react-native bundle --platform ios --dev false --entry-file base.js --bundle-output build/ios/common.jsbundle --assets-dest build/ios/
 
 react-native bundle --platform ios --dev false --entry-file index.js --bundle-output build/ios/main_app_all.jsbundle --assets-dest build/ios/
@@ -8,4 +16,8 @@ react-native bundle --platform ios --dev false --entry-file rewards/index.js --b
 
 node diff.js ./build/ios/common.jsbundle ./build/ios/main_app_all.jsbundle ./build/ios/main_app.jsbundle
 node diff.js ./build/ios/common.jsbundle ./build/ios/sub_app_all.jsbundle ./build/ios/sub_app.jsbundle
+```
+
+#### To be done
 
+Support Android