Added AndroidApp project
Add libtun2socks.so binary (was skipped due to .gitignore)
Link to Android project in README
added support for bind-to-device, via a remote service, for VPN routing exclusion (android/linux only); associated refactoring of dialers and conns
Fixes for Android VpnService with Go client. This is now working.
Merge pull request #21 from rod-hynes/master

Sample Android app that uses Go client; support for Android VpnService in Go client: bind-to-device to ensure tunnel connections aren't routed through the VPN.