Optional numpy in cmake
Optional numpy support in py cmake files
Create FindNumPy.cmake
Added additional API to get particle data as a NumPy array
Updated getArray to use iterators - faster

+ WIP version of setArray
Added setArray API to set particle attribute data from a NumPy array
C++ style comments
Upgraded getArray() to return 2d arrays

With row size = attribute size
Add support for integer attributes in getArray() / setArray()
Remove old getTuple method, probably redundant now
Merge remote-tracking branch 'refs/remotes/mattebb/master' into redpawfx

Conflicts resolved
	CMakeLists.txt
	src/py/partio.i