Scan Better

Clean up the scanning. Scan and then stop after N seconds. Add Swipe
control. Move to direct pre-L scan routine.
Update
Merge branch 'master' of https://github.com/google/uribeacon into ScanBetter

Conflicts:

android-uribeacon/uribeacon-sample/src/main/java/org/uribeacon/sample/Ur
iBeaconScanActivity.java
	android-uribeacon/uribeacon-sample/src/main/res/values/strings.xml
Keep devices on screen forever.
Merge pull request #34 from schilit/ScanBetter

Scan better