Images updated
Paths created
xmls updated
Moving Enemies implemented

Moving enemies are implemented and working correctly! Also, the README
was updated to fit the current status of the project. Instructions were
included in this file for Stage creation. A Stage 4 menu option was
created, but does nothing yet. Just a heads up. Somebody should create
said Stage.

TODO: Create lots of Stages, finish testing and cleaning, create entity
outlines