Add removeGeometry functions
Refactor GeometryCollection tests and get rid of extra removeGeometry methods
cleanup
get rid of some warnings
add TFPrimitive protocol stubs to TFFeature
add TFTestData class to load test data from example geojson files
Merge pull request #14 from aranasaurus/master

GeometryCollection cleanup and test data helpers
Add coordinate accessor to TFPoint
TFMultiPoint