Add list view with very simple adapter. Elements disappear when they are
pressed with an animation effect.
Add TimelineDisplayActivity and associated xml. Edit Manifest to allow
its use.
Timeline, TLEvent, and Category classes are now Serializable to allow
passing in Intent extras.
Add activity title string
TimelineSelectionFragment creates new TimelineDisplayActivities, passing
a Timeline object. Removed unnecessary test animation.
Merge pull request #3 from joshuawright11/Josh

New activities to draw timelines are created when an item in the listview is clicked. 

Josh