Update GPUImageHistogramFilter.h
Added support for fast texture upload
Added new histogram equalization filter
Added new histogram equalization filter
Added new histogram equalization filter
Added example of new histogram equalization filter
Added example of new histogram equalization filter
Added example of new histogram equalization filter
Update GPUImageHistogramEqualizationFilter.m
Update project.pbxproj
Update project.pbxproj
Merge pull request #1736 from amarcu5/master

New histogram equalization filter
Merge branch 'master' into develop