Included test classes and javadoc
Merge branch 'master' of https://github.com/anidev/HokiePlanner.git

Conflicts:
	src/org/gorilla/hokieplanner/guerilla/Checksheet.java
	src/org/gorilla/hokieplanner/guerilla/RequiredCourse.java
	src/org/gorilla/hokieplanner/guerilla/Tree.java
	src/org/gorilla/hokieplanner/guerilla/XMLHandler.java