update readme with latest setup details

* more accurate for latest version of Android Studio
* general cleanup of links, formatting, etc.
Update Android support library to v19.1.x.
remove mock location permission

remove mock location permission as per Android Studio's recommendation. people can either add it when needed for testing or create a debug-specific manifest.
Merge pull request #135 from bbodenmiller/rm-mock-location

remove mock location permission
Merge pull request #123 from bbodenmiller/readme

update readme
Merge pull request #140 from CUTR-at-USF/updateSupportLibrary

Update Android support library to v19.1.x