docs: review and clean up (#3730)

* fix(ts): onPlaybackRateChangeData was not correctly typed

* fix: ensure tracks are well displayed in the sample

* chore: reorder drm props

* chore: reorder events

* docs: move onAudioTracks to events

* docs: reorder and clean <PlatformsList from methods

* docs: fix props case naming

* docs: fix ordering

* docs: fix ordering & remove trackId

* chore: remove sample build from installation page

* docs: remove outdated information

* docs: remove beta information from doc landing page

docs/pages/other/misc.md

@@ -60,19 +60,3 @@ The asset system [introduced in RN `0.14`](http://www.reactnative.com/react-nati
 ## Play in background on iOS
 
 To enable audio to play in background on iOS the audio session needs to be set to `AVAudioSessionCategoryPlayback`. See [Apple documentation][3] for additional details. (NOTE: there is now a ticket to [expose this as a prop]( https://github.com/react-native-community/react-native-video/issues/310) )
-
-## Examples
-
-- See an [Example integration][1] in `react-native-login` *note that this example uses an older version of this library, before we used `export default` -- if you use `require` you will need to do `require('react-native-video').default` as per instructions above.*
-- Try the included [VideoPlayer example][2] yourself:
-
-   ```sh
-   git clone git@github.com:react-native-community/react-native-video.git
-   cd react-native-video/example
-   npm install
-   open ios/VideoPlayer.xcodeproj
-   ```
-
-   Then `Cmd+R` to start the React Packager, build and run the project in the simulator.
-
-- [Lumpen Radio](https://github.com/jhabdas/lumpen-radio) contains another example integration using local files and full screen background video.