For Android Sink: Implemented invoking listener on voume change and mute.
Added sample code to create an Android player of audio to AllJoyn Audio Sinks.
Build the Android samples from the command line.

Whitespace fixes.
Remove /org/example prefix from object path.

Change-Id: Ie9d3b362ad95417a0632d0dbda7be21f81253b5a
Ignore generated files.

Change-Id: I904af29693d97b96116a7c4d116a87bd81ff2798
Build clean in release mode.

Change-Id: I5a7ae49f00e3f6bd478735f213d70fa3659e000e
Remove unused/unneeded files from Android applications.

Change-Id: Iecd527d84b219693f752d41125e6b3fc14559b1c