title: Updating custom Android app
body: <p>My customer wants the android app to update itself automatically whenever a change is made. They do not want to publish the app in the android market. For the first time, the app will be installed using the Android SDK or the numerous other ways to install.</p>
  
  <p>How do I ensure that the app is automatically upgraded whenever bug fixes or features are added. If not automatically, a button from the app is also ok</p>
  
  <p>Thanks.</p>