title: android: Recursive copy with adb push
body: <p>I think adb's push is file-based. 
  I want to be able to push entire folders. 
  Is there an easy way without scripting?</p>
  
  <p>Thanks!</p>
  
  <p>Edit:
  I need to work with sub-folders.</p>
  
  <p>Edit:
  Seems that adb pull is recursive but push is not.
  So I changed the title and description accordingly. </p>