advanced the ai.
Merge branch 'master' of http://github.com/Jbtyson/cis580-rts

Conflicts:
	rts/src/buildings/towncenter.js
more ai functions
Merge branch 'master' of http://github.com/Jbtyson/cis580-rts

Conflicts:
	rts/src/buildings/towncenter.js
	rts/src/gameplay/input.js