Merge pull request #1 from georgim0/master

interface for actions in the background initial design. Services and update manager finished
Firewall feature
Extra activity for overlay - iptables
Compatibility for returning in activity with firewall exit code
Power manager feature
Merge branch 'master' of github.com:vaslabs/pi-android-agent
Compatibility with new interface
Compatibility with new interface
Error notification
Clean-up
Create README.md
added package recommendation to the views
fetched changes