title: Running android emulator on travis-ci without -no-window option
body: <p>I'd like to figure out if it will be possible to run the android emulator on travis-ci without -no-window option.</p>
  
  <p>When I try <a href="http://docs.travis-ci.com/user/languages/android/#How-to-Create-and-Start-an-Emulator" rel="nofollow">the example</a>, and remove the <code>-no-window</code> option, then the <code>android-wait-for-emulator</code> part of the following code hangs:</p>
  
  <pre><code># Emulator Management: Create, Start and Wait
  before_script:
    - echo no | android create avd --force -n test -t android-19 --abi armeabi-v7a
    - emulator -avd test -no-skin -no-audio &amp;
    - android-wait-for-emulator
    - adb shell input keyevent 82 &amp;
  </code></pre>
  
  <p>I'm hoping there is some way to do this, because it appears that Firefox depends on it.</p>
  
  <p>Perhaps a something like the <a href="http://docs.travis-ci.com/user/gui-and-headless-browsers/" rel="nofollow">GUI &amp; Headless browser testing</a>, but for the android emulator?</p>