Python 3.6 support issue with fastRCNN

[dashesy]

If cython_bbox and cython_nms where in .pyx format we could just compile for any version of Python (or use pyximport if the code has no dependencies) instead of including the dll (pyd is dll) inside the repo.

[codeslord]

Good suggestion, but to make things easier, Made PR #37 with updated utils for Python 3.6, once they merge it the issue will be gone.