pically want to sign your application in debug mode when you develop and test
  your application, because the build tools use a debug key with a known password so you do not have
  to enter it every time you build. When you are ready to release the application to Google
  Play, you must sign the application in release mode, using your own private key.</p>

  <p>Fortunately, Eclipse or your Ant build script signs the application for you in debug mode
  when you build your application. You can also easily set