Expand vtk macros such as vtkSetMacro...

Issue #43
Add documentation for msvVTKButtons
Fix msvQTimePlayerWidget documentation.

Issue #43
Fix VTK based documentation

 * VTK documentation doesn't follow Doxygen file format but defines its own
documentation style (i.e. "// Description"), MSVTK deriving from VTK
files are now pre-processed to generate Doxygen compliant code.

 * Expand vtkSetMacro and vtkGetMacro by specifying
Issue #43
Merge branch '43-cleanup-documentation'

* 43-cleanup-documentation:
  Fix VTK based documentation
  Fix msvQTimePlayerWidget documentation.
  Add documentation for msvVTKButtons
  Expand vtk macros such as vtkSetMacro...