Updated compileSdkVersion and targetSdkVersion to 20
Added region resolver. Updated NearbyDevice adapter.
Merge branch 'master' of https://github.com/matthewsibigtroth/physical-web into scan_result_adapter_addition
Merge branch 'master' of https://github.com/google/physical-web into scan_result_adapter_addition
New region resolver, nearby device adapter.

Implemented region resolver. Replaced nearby device adapter. Updated
metadata server.
Merge pull request #64 from matthewsibigtroth/scan_result_adapter_addition

Scan result adapter addition