Merge pull request #104 from DIdiHL/zhaoyue

BluetoothAudioTest is ready
added test for usb host mode
Merge branch 'development' of https://github.com/DIdiHL/plugin_android_library into culaucon
test is working for usb host device event
made tests work
modify send data for text/plain type
Merge branch 'development' of https://github.com/DIdiHL/plugin_android_library into chenxi
minor changes in usbaccessory
added back mocksana app
Merge branch 'development' of https://github.com/DIdiHL/plugin_android_library into chenxi
integrate with real sana app
Merge pull request #105 from DIdiHL/chenxi

Integrate with real sana app
Clean up DeviceFactory to remove bluetooth specific code.
Merge pull request #106 from DIdiHL/hanlin

Clean up DeviceFactory to remove bluetooth specific code.
handle control parameter in CommManager
Merge branch 'development' of https://github.com/DIdiHL/plugin_android_library into chenxi
Merge pull request #107 from DIdiHL/chenxi

Handle control parameter
add return all control parameters
add intent filters to integrate with Sana
Merge pull request #108 from DIdiHL/chenxi

Chenxi