Extracted core routine
resolve image width or height is float value issue

if width is float value like 155.50, CGBitmapContextCreate error, I do
not know why the width of a float value , but is happened.
Prevent crash on iOS6
Merge pull request #7 from foxling/master

resolve image width or height is float value issue
Etract the stack blur method
read me change + missing function in header
Merge pull request #8 from tomsoft1/gyuque-master

Gyuque master
Fixed compiler warning
Fixes potential memory leak
Merge pull request #19 from jkoepcke/patch-1

Fixes potential memory leak
Merge pull request #14 from thibaultCha/master

Fixed compiler warning
Merge pull request #1 from tomsoft1/master

Update