Added AudioUtil

*todo BlueTooth
sender stats on client and receiver stats on peer but displaying all stats
start moving the badit script to pything doing less and more portable
fix end call exponential stats bug
python script now building and deploying
replace shell badit script with python badit script
Update default ndk to 8d, Optimize final/release for icf, gc-sections, visibility=hidden (25% size savings)
exit after failed command
Fixing the tuenti build
Update README.md
Update README.md
Wiring call tracking id through java part
make the badit script more user friendly for doing specific tasks
Merge branch 'master' of github.com:lukeweber/webrtc-jingle-client
Merge pull request #60 from jreyes/audio_util

Added AudioUtil for headset/speaker/wiredheadset support