title: Android Floating Action Button API 19 (KitKat)
body: <p>I need to implement a floating action button, according to <a href="http://www.google.com/design/spec/components/buttons.html">Google Design Guidelines</a>, on my android application with API level 19.</p>
  
  <p>However, I would know if some native support library (like v4, v7, v13) to help me build this component without the need for external dependencies.</p>