Fix playableDuration in onProgress & return seekableDuration

add seekableDuration to Android

Add requiresMainQueueSetup method

fxied an issue that does not use passed argument

Add link to propTypes

Document poster prop

Since RN 0.49, `requiresMainQueueSetup` needs to be defined if the module overrides `constantsToExport`.

* Remove depreciated createJSModules @ovveride marker

* Remove depreciated createJSModules @ovveride marker

* Added comment in exoplayer

* Added comment

* Remove trailing spaces

* Fix typo in comment

* Fix typo in comment

* Fix typo in comment

* Fix typo in comment

* [tvOS] Update podspec

* [tvOS] Add tvOS target

* Update README.md

* [docs] Folder that contains pictures and content for documentation

* tvOS Readme

* [JPEG] Update image to JPEG

Some props are missing in the documentation, the propTypes provides a full list of those. I think it would help a lot of developers to add a link here.

* Added flag for background mode

* Better flag name

* issue 310 - Added a new property, ignoreSilentSwitch. When true, audio will play even when the silent switch on an iOS device is set to silent. When false, the audio will toggle with the silent switch. Sets the AVAudioSession to either playback or ambient.

* Added ignoreSilentSwitch usage to example app and to readme

* Changed ignoreSilentSwitch to accept two string values, ignore and obey.
This accounts for the case where the user does not want to modify the audio session from a particular video instance. The user would not use the ignoreSilentSwitch property at all in that case.
Also, the audio session will only be updated when the video is unpaused, instead of whenever the video component has updated props. This allows for multiple videos to be on the screen, with the most recent video unpaused (aka played) being the video that has control over the audio session.

* initial support for WPF

* update readme with WPF specific instructions

* remove autogenerated .gitattributes file

* reference RNW NPM package instead of hard-coded local reference

* use progressUpdateInterval in android

* convert progressUpdateInterval to int

* bump android dependencies

* fixed lint

* Upgrade to ScalableVideoView version 1.0.4

* Fix bug in cleanupMediaPlayerResources

* Fix VideoView on Android