Merge pull request #1 from emmazhou/master

Update docs for new iOS SDK
added documentation for additional events
Merge branch 'master' of github.com:Vungle/coronaplugin-release
updated release with 3.0.4-SNAPSHOT jars
(1) upgraded Android SDK from 3.0.4-SNAPSHOT --> 3.0.4; (2) improved Lua example to play onCachedAdAvailable, but doesn't play second time because it is in refractory period in between ads
upgraded Android SDK from 3.0.4 --> 3.0.5
upgraded Android SDK from 3.0.5 --> 3.0.6 (fix for EventListener.onVideoView() sometimes reports 0 ms watched on Android 4.0.x-4.1.x)
updated Corona Android jar to output version 2.0.1; still need to rebuild and insert iOS binary that reports version 2.0.1
updated iOS Corona library from 2.0.0 --> 2.0.1
removed android support jar because Corona says it already includes v4 in build process (which is sufficient for us)
new binaries with the new version name
upgraded Publisher SDK from 3.0.6 --> 3.1.0 (including Google Play Services jar)
removed isCloseShown from documentation as this is server-side only since Android SDK 3.0.2 and removed since Android SDK 3.1.0
added google play services to build.settings
Google Play Services and documentation fixes for Android SDK 3.1.0
* updated documentation from mercurial (Jordyn's changes)
* updated index.markdown to add Google Play Services plugin
* updated show.markdown to remove reference to removed 'isCloseShown' property
copied docs, releases from plugins-hosted-vungle-beta (3.1.0 release with Google Play Services)
removed Android permissions from sample app build.settings
* unneeded as they are added by our plugin
new binaries
updating ios to 3.0.9
moved /samples directory to plugin project