Hello NDK with Android Studio 1.3

After surfing the Web for a couple of hours trying to figure out how to execute C\C++ code with AndroidStudio 1.3 and gradle 1.2.3, the 'bull's-eye' solution I fount was on Stackoverflow and its code on GitHub.

I don't want to copy-paste the solution here, you can see how the answer steps clearly.
Thanks :)