warning added.
build error fixed.
Merge pull request #63 from demon1105/master

IOSDuoduo-Prefix.pch never exsited.
remove unneeded UIButton on xib, replacement by UITapGestureRecognizer.
it's better to call endEditing: to dismiss keyboard. Just think about that more than ten text field or even more...we won't call resignFirstResponder for each text field object.
Merge pull request #64 from demon1105/master

Improvements.
Update README.md
Update README.md
Update README.md
Update README.md
Init

Init