Update React Native

docs/react-native.md

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+# React Native
+
+
+### SimpleUser class
+
+The [SimpleUser](./simple-user.md) class will not work with React Native (it depends on the DOM).
+
+### API framework
+
+In order to use the [API](./api.md) framework in React Native (for building Android and iOS apps):
+
+- include the [react-native-webrtc](https://github.com/react-native-webrtc/react-native-webrtc) dependency into your React Native project
+- call the exposed [registerGlobals()](https://github.com/react-native-webrtc/react-native-webrtc#registerglobals) function before creating a new `UserAgent` instance
+
+By calling `registerGlobals()`, classes required by WebRTC such as `RTCPeerConnection` and `MediaStream` (among others) will be exposed in the global scope which is required by the default WebRTC [SessionDescriptionHandler](./session-description-handler).
+
+For example...
+```
+import { registerGlobals } from 'react-native-webrtc';
+import { UserAgent } from 'sip.js';
+
+registerGlobals();
+
+const ua = new UserAgent(/* configuration options here */);
+```
+
+### Core library
+
+The [Core](./core.md) library works with React Native out of the box.

src/platform/react/README.md

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+See [documentation](../.././../docs/react-native.md).