Merge pull request #26 from JieCyun/master

blocksize-.>bkockSize
add pixkit-file.hpp
pixkit v0.5.0
add two nms functions and move labeling function to pixkit-cv
Update pixkit-cv.hpp
add a LAT2011 function

A New Local Adaptive Thresholding Technique in Binarization 2011
Merge pull request #28 from Li-Ying/master

add a LAT2011 function
add head
modify example file
add Gaussian diff observation method
add pixkit::qualityassessment::getDFTInfo
add pixkit::halftoning::errordiffusion::FloydSteinberg1976
bug fix
添加新的函數
Revert "添加新的函數"

This reverts commit 082e9621438dde6fb353351ec33957fb904eda9d.