Ref #10 : Added some missing class documentation. Forced all optional AdapterActivity methods and ListAdapterFragment methods onto subclasses to implement. To hard to remember which methods to override for a given functionality. Added ability to turn off containsAll(). Added new Android ArrayAdapter demo. Includes a new package with activity, frag, and movie adapter.  Added header ability to main/root activity.  Renamed a lot of the classes since some of their names were getting too long. MovieItem supports a toString() method...required to support Android ArrayAdapter's built in ArrayFilter.