sdk(react-native-sdk): update README file (#13545)

* sdk(react-native-sdk): update README file

react-native-sdk/README.md

@@ -2,11 +2,48 @@
 
 
 ## Installation
- Inside your project, run `npm i @jitsi/react-native-sdk`.<br/><br/>Additionally if not already installed, the following dependencies need to be added:
- <br/>`npm i @react-native-async-storage/async-storage react-native-webrtc`
+Inside your project, run `npm i @jitsi/react-native-sdk`.<br/><br/>Additionally, if not already installed, some dependencies will need to be added.
+
+This can be done by running the following script:
+```
+"update-deps": "node node_modules/@jitsi/react-native-sdk/update_dependencies.js"
+```
+This will check and update all your dependencies.<br/><br/>
+
 
  [comment]: # (These deps definitely need to be added manually, more could be neccesary)
 
+Because of SVG use in react native, you need to update metro.config your project's file:
+
+```
+const { getDefaultConfig } = require('metro-config');
+
+module.exports = (async () => {
+  const {
+    resolver: {
+      sourceExts,
+      assetExts
+    }
+  } = await getDefaultConfig();
+
+  return {
+    transformer: {
+      babelTransformerPath: require.resolve('react-native-svg-transformer'),
+      getTransformOptions: async () => ({
+        transform: {
+          experimentalImportSupport: false,
+          inlineRequires: true,
+        },
+      }),
+    },
+    resolver: {
+      assetExts: assetExts.filter(ext => ext !== 'svg'),
+      sourceExts: [...sourceExts, 'svg']
+    }
+  }
+})();
+```
+
 ### iOS
 
 #### Project Info.plist
@@ -20,9 +57,10 @@
         - Voice over IP
         - Background fetch
 - Add Copy Sounds step:
+1. Open XCode, go to Build Phases and add this step and the script below.
 
 ```
-    SOUNDS_DIR="${PROJECT_DIR}/../node_modules/rnsdk/sounds"
+    SOUNDS_DIR="${PROJECT_DIR}/../node_modules/@jitsi/react-native-sdk/sounds"
     cp $SOUNDS_DIR/* ${CONFIGURATION_BUILD_DIR}/${UNLOCALIZED_RESOURCES_FOLDER_PATH}/
 ```
 #### Podfile
@@ -34,7 +72,7 @@ Run `cd ios && pod install && cd ..`
 
 - In your build.gradle have at least `minSdkVersion = 24`
 - TODO: HOW TO ADD COPY SOUNDS STEP
-- Under the `</application>`  tag of your AndroidManifest.xml make sure that it includes
+- In `android/app/src/debug/AndroidManifest.xml` and `android/app/src/main/AndroidManifest.xml`, under the `</application>` tag, include
   ```
     <uses-permission android:name="android.permission.RECORD_AUDIO" />
     <uses-permission android:name="android.permission.CAMERA" />