Merge pull request #15 from szagoruyko/master

fix os x build with CUDA 6.0
clarification
changing default scale
adding cross-map max pooling ffi signatures
added failing SpatialCrossMaxPooling
default dW = kW
removed unused local
fixed stride bug - outputX should be ceiled instead of floored
fixed stride bug for other modules
Merge pull request #16 from adampolyak/master

Allow filters to pass image size