Merge pull request xhzengAIB#119 from yourtion/master Fix pod error AudioToolbox

Fix the warnings 

Fix the block bug. 

Update README.md 

fix the error for XHPhotographyHelper weakSelf. 

Update README.md 

Update v0.1.5 

fix the header import error for v0.1.4 

update file 

update v0.1.2