README Fix
Android 5.0 API 2.1
Merge pull request #252 from Shusshu/api21

Android 5.0 API 2.1
Use sdk platform 21 instead of 19 so appcompat runs

Without this, the new Android Compatibility Extra V7 AppCompat Library will fail to install.
Merge pull request #254 from rtack/patch-1

Use sdk platform 21 instead of 19 so appcompat runs
Merge pull request #247 from salehhamadeh/master

README Fix
Multidex jar + readme
Upgrade to 2.7.0
Merge pull request #255 from Shusshu/feature-multidex

Feature multidex
deactivated admob
Remove not referenced platforms/android-L folder
Update README.markdown for platform 5.0
Update README.markdown with current platform revisions
Merge pull request #258 from ncornette/l-cleanup

Cleanup android L resources, and update README