Add docs and Manifest update.

A docs folder to hold javadoc documentaiton has been added. The Manifest
file has also been updated such that information can be read from, or
written to a text file on the Android device.

Change-Id: Ib9b20b3d93ea1c23eb0ed7fd3b853f092452fdcd
Signed-off-by: Dan Griffin <dcompgriff@gmail.com>
Added layouts and Activity classes.

Added the "hangman_activity_layout" and "word_entry_layout", as well as
their respective Activity classes.

Change-Id: I6870c0a3c75e03d984665abeaf876e3d039b5151
Signed-off-by: Dan Griffin <dcompgriff@gmail.com>