title: embed crosswalk in android studio
body: <p>I'm new about android programming and android studio.
  I researched crosswalk embed API for my project and tried to embed it in android studio. But I couldn't be succesfull. Even I don't know exactly how can embed an API that has gradle file or not.</p>
  
  <p>Maybe there is a problem with gradle system? 
  In brief, how can I embed crosswalk-webview to my project with android studio step by step?
  Thanks a lot you.</p>