Added more docstrings to TrajFeatureUnion.
Added more docstrings to TrajFeatureUnion.

mpharrigan/mixtape,stephenliu1989/msmbuilder,brookehus/msmbuilder,mpharrigan/mixtape,Eigenstate/msmbuilder,mpharrigan/mixtape,brookehus/msmbuilder,rafwiewiora/msmbuilder,peastman/msmbuilder,peastman/msmbuilder,rafwiewiora/msmbuilder,stephenliu1989/msmbuilder,dr-nate/msmbuilder,Eigenstate/msmbuilder,cxhernandez/msmbuilder,rafwiewiora/msmbuilder,msmbuilder/msmbuilder,cxhernandez/msmbuilder,msultan/msmbuilder,peastman/msmbuilder,brookehus/msmbuilder,msmbuilder/msmbuilder,msultan/msmbuilder,brookehus/msmbuilder,rafwiewiora/msmbuilder,msultan/msmbuilder,rafwiewiora/msmbuilder,msmbuilder/msmbuilder,Eigenstate/msmbuilder,Eigenstate/msmbuilder,rmcgibbo/msmbuilder,msultan/msmbuilder,rmcgibbo/msmbuilder,cxhernandez/msmbuilder,peastman/msmbuilder,dr-nate/msmbuilder,mpharrigan/mixtape,dotsdl/msmbuilder,dr-nate/msmbuilder,dotsdl/msmbuilder,stephenliu1989/msmbuilder,cxhernandez/msmbuilder,brookehus/msmbuilder,dotsdl/msmbuilder,cxhernandez/msmbuilder,stephenliu1989/msmbuilder,Eigenstate/msmbuilder,rmcgibbo/msmbuilder,msmbuilder/msmbuilder,rmcgibbo/msmbuilder,dr-nate/msmbuilder,msultan/msmbuilder,dotsdl/msmbuilder,peastman/msmbuilder,msmbuilder/msmbuilder,mpharrigan/mixtape,dr-nate/msmbuilder