ARC, Chinese input and emoji delete#22

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cyndibaby905 wants to merge 9 commits intoenormego:masterfrom

cyndibaby905:master

Commits on Feb 9, 2013

Converted to ARC; fixed the Chinese input error; fixed the multiple characters delete issue
Hang Chen
committed

Commits on Feb 9, 2014

Rewrote some methods
cyndibaby905
committed