Sparse data support: SparseBlob and InnerProduct with sparse support
moved the sparse blob import to CommonLayers.hpp
fix cmake build
added python support for sparse data, added new in memory data layer for sparse data
support for sparse data in python
changed the readme to show what is this fork about
fix bug in softmax
added test for sparse data memory layer
removed inefficiency in softmax, fixg memory bugs in  sparse data layer, improved performance in matrix operations
modified softmax to run faster
Sparse data support: SparseBlob and InnerProduct with sparse support
fix travis install script to include cusparse
merged latest changes form dev