Update README.md

Author: Kudo

README.md

@@ -3,3 +3,73 @@
 
 # react-native-cli-plugin-benchmark
 React Native CLI Plugin for Benchmark Regression
+
+## Installation
+```sh
+$ yarn add react-native-cli-plugin-benchmark
+```
+
+## Supported Commands
+
+### react-native get-appsize-ios
+Get the generated IPA size from run-ios output
+
+```sh
+$ react-native get-appsize-ios --configuration Release --sdk iphoneos 
+info Found Xcode workspace "RNApp.xcworkspace"
+info Building (using "xcodebuild -workspace RNApp.xcworkspace -configuration Release -scheme RNApp -sdk iphoneos CODE_SIGN_IDENTITY="" CODE_SIGNING_REQUIRED=NO CODE_SIGNING_ALLOWED=NO")
+info Generated app size:
+{"/Users/kudo/Library/Developer/Xcode/DerivedData/RNApp-auhfmjezpdwqwhasqmpbigmosgfe/Build/Products/Release-iphoneos/RNApp.app":37632}
+```
+
+### react-native get-appsize-android
+Get the generated APK size from run-android output
+
+```sh
+$ react-native get-appsize-android --variant release
+info Running jetifier to migrate libraries to AndroidX. You can disable it using "--no-jetifier" flag.
+info Building the app...
+info Generated app size:
+{"/Users/kudo/RNApp/android/app/build/outputs/apk/release/app-release.apk":19603464}
+```
+
+### react-native measure-ios
+Measure from run-ios output
+Note that the command in fact to patch AppDelegate to log some information after 5 seconds from launch.
+The information are from RCTPerformanceLogger and task memory.
+
+```sh
+$ react-native measure-ios --configuration Release --no-packager
+info Found Xcode workspace "RNApp.xcworkspace"
+info Launching iPhone X (iOS 12.4)
+info Building (using "xcodebuild -workspace RNApp.xcworkspace -configuration Release -scheme RNApp -destination id=6FF18363-C213-4E59-9A83-3117EE7AE6FE")
+▸ Compiling diy-fp.cc   
+▸ Compiling bignum.cc     
+▸ Compiling cached-powers.cc                                        
+▸ Compiling double-conversion.cc
+...
+info Launching "org.reactjs.native.example.RNApp"
+success Successfully launched the app on the simulator
+info Measurement result:
+{
+    "duration.RCTPLScriptDownload": "2",
+    "duration.RCTPLScriptExecution": "181",
+    "duration.RCTPLRAMBundleLoad": "0",
+    "duration.RCTPLRAMStartupCodeSize": "0",
+    "duration.RCTPLRAMStartupNativeRequires": "0",
+    "duration.RCTPLRAMStartupNativeRequiresCount": "0",
+    "duration.RCTPLRAMNativeRequires": "0",
+    "duration.RCTPLRAMNativeRequiresCount": "0",
+    "duration.RCTPLNativeModuleInit": "2",
+    "duration.RCTPLNativeModuleMainThread": "56",
+    "duration.RCTPLNativeModulePrepareConfig": "0",
+    "duration.RCTPLNativeModuleMainThreadUsesCount": "4",
+    "duration.RCTPLNativeModuleSetup": "0",
+    "duration.RCTPLTurboModuleSetup": "0",
+    "duration.RCTPLJSCWrapperOpenLibrary": "0",
+    "duration.RCTPLBridgeStartup": "284",
+    "duration.RCTPLTTI": "474",
+    "duration.RCTPLBundleSize": "652466",
+    "memory": "55541760"
+}
+```