title: How to launch preexisting app with actual device with appium by ruby code
body: <p>Could anyone help me actually launch a existing application with appium?</p>
  
  <p>I'm really new to it so actual code would really help.</p>
  
  <p>how would I initialize my caps and do I need the appPackage and appActivity ?? and if so where would I get these values.</p>
  
  <p>Also the last command to actually run the android driver.
  thx
  Thank you</p>