Merge branch 'develop'

* develop:
  Modifications required in order to build MAF2 with Visual Studio 2013, specifically:
  Instead of importing VTK points as mafVmePointSet, which does not even have associated default visual pipe and I have never seen it to be used in vertical applications, these are now imported as mafVmeLandmarkCloud, which is derived from mafVmePointSet, but provides users with a better functionality (such as visuual pipe, assigning labels to points, ...). It should be more useful.
  Ignore the content of Build directory
FIXED BUG: If the passed data is not of vtkPolyData, polydata will be NULL and this NULL is passed to mafVMEPointSet::SetData, which is wrong and will cause ASSERT in DEBUG mode crippling unit tests.
Merge https://github.com/b3c/MAF2 into OpenMAF-2-2
Merge pull request #26 from besoft/OpenMAF-2-2

FIXED BUG: If the passed data is not of vtkPolyData, polydata will be NU...
Merge https://github.com/b3c/MAF2 into OpenMAF-2-2
FIXED BUG: material is not written into the file stream.
Merge pull request #27 from besoft/OpenMAF-2-2

 FIXED BUG: material is not written into the file stream (mafVMEMeshAnsysTextExporter)
Merge branch 'OpenMAF-2-2' of https://github.com/b3c/MAF2 into develop