* Makefile bugfix
* Async calls (either deferred or truly async, configurable)
* Use clang for Android instead
* use c++_static as our STL instead of gnustl_static
* HTTP_CONNECTOR in CPP_FLAGS for Android
Define HTTP_CONNECTOR to include HttpClient header
* examples-clean, and run it on examples
* put the launch policy into a variable
Merge pull request #16 from stelcheck/features/async

Async
Merge branch 'develop' into unity