rgbToGray
Binary instances of images
Revert "Merge branch 'develop' of github.com:albertoruiz/easyVision"

This reverts commit a005a24335ed332407e660caaf9cfd1260550e38, reversing
changes made to 61ba9e3d2fd6b6767ccf94291daa851f789f8ccc.
Merge branch 'master' into tmaster