Renamed SimplicialComplex to DeformableSimplicialComplex
Removed the dependency on the DSC class. This means the UI class now contains pointers to the current VelocityFunc, DeformableSimplicialComplex and Log instances. Furthermore, the VelocityFunc instance also contains a pointer to DeformableSimplicialComplex and is now keeping track of the number of time steps.
Updated the DEMO application such that it does not use the DSC class anymore. Furthermore, the velocity function examples are updated to use the pointer to the instance of DeformableSimplicialComplex class in the parent VelocityFunc class instead of a function argument.
Deleted the unused DSC.h file.
Changed to c++11 nullptr.
Moved the user interface to the DEMO application.
Moved all draw functionality to the DEMO application.
Committed updated XCode project.