Implemented most of the BFSTree class: there are several bugs related
to pulling information from the tree (currently, the only information that
can be succesfully obtained is the total number of nodes in the tree).
Merge branch 'master' of https://github.com/jwelch1324/wloop

Conflicts:
	BFSNode.cpp
	BFSTree.cpp
	BFSTree.h
	WalshGraphSimplifier.xcodeproj/project.pbxproj
	WalshGraphSimplifier.xcodeproj/xcuserdata/jwelch.xcuserdatad/xcdebugger/Breakpoints.xcbkptlist
	main.cpp