Adding gradle support
Removing .gradle
Removing gradlew
Updating sdk build tools
Fixing clickable buttons in subscriber control bar
Missing file update
Adding new structure for gradle project
Fixing package names
Minor docs edits and info on using Android Studio.
Adding some missing docs.
Adding docs for the Emulator Hello World sample code.
More emulator docs
Docs for the screen-sharing sample code.
Removing redundant information and adding a link to the reference docs.
Minor corrections.
Info on setPublisherVideoType() and the Genymotion Android emulator.
Adding changes to remove views in UIActivity when onSessionDisconnect callback has been received
Merge pull request #43 from jeffswartz/jira/19215

Jira/19215
Updating after doc merge
Merge pull request #42 from marinaserranomontes/add_gradle

Add gradle