update readme with latest setup details

* more accurate for latest version of Android Studio
* general cleanup of links, formatting, etc.
Fix #130 - Fix and update tests.  Move tests from /instrumentTest to /androidTest per Android Gradle plugin 0.9 requirements.  Add multi-region functionality to tests.  Add region-related tests.  Add separate tests for using a region to build the URL and using a custom API entered by the user to build the URL.  Add URL format tests.  Remove extra URIs from the urimap.json.  Remove old __regions.csv file that is no longer used.
Remove unused constants.
Fix #132 - Handle region base URLs correctly when they are missing a trailing `/`, and when they include a port number.  Update fallback host name to current Puget Sound server.
Update the bundled regions_v3.json file to the latest production version from http://regions.onebusaway.org/regions-v3.json.  Remove old regions.json file that is no longer used.
Merge pull request #131 from CUTR-at-USF/issue130-FixTests

Fix #130 - Fix and update tests.  Move tests from /instrumentTest to /an...
Merge pull request #133 from CUTR-at-USF/issue132-UrlFormattingRegions

Fix #132 - Handle region base URLs correctly when they are missing a tra...
Merge pull request #134 from CUTR-at-USF/updateRegionsResource

Update the bundled regions_v3.json file to the latest production version...
Fix #137 - Run tests on TravisCI.
Update to #137 - Add "global" key.
Update to #137 - Remove quotes from ANDROID_TARGET variable
Update to #137 - Remove ANDROID_TARGET variable.
Update to #137 - Add script to wait for emulator
Update to #137 - Add missing space to comment in script.
Update to #137 - Replace wait_for_emulator script
Add comments to wait_for_emulator script
Merge pull request #138 from CUTR-at-USF/issue137-TestsOnTravis

Fix #137 - Run tests on Travis CI
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