Merge pull request #11 from mbcharbonneau/master

Change geometry type to an enum, factory method on TFGeometry to instantiate subclasses.
Merge pull request #12 from mbcharbonneau/master

Fix merge issues.
Add multi polygon class, private methods to polygon.
TFPoint and TFCoordinate hash, equals, tests
fix TFPoint initWithCoordinate
Merge pull request #13 from jyaganeh/master

TFCoordinate and TFPoint hash + equals
Merge remote-tracking branch 'upstream/master'

Conflicts:
	Terraformer.xcodeproj/project.pbxproj