title: Install "dev" build of Android app along side market version
body: <p>I just released my first Android Application through the market. I'm currently working on some new features for the next release and would like to install this "dev build" on my phone, without uninstalling the "production" version (among other things, this will stop future updates from the Market).</p>
  
  <p>I'm especially interested in this because I'd like to give the APK to friends / "beta-testers" to try, but I don't want them to uninstall the released application first.</p>
  
  <p>Is there anyway to have on one device two applications: "App (via market)" and "App (DEV)"</p>
  
  <p>Would this involve using a different signing key or modifying the manifest in someway?</p>
  
  <p>Thanks!</p>