Add feature: keychain stores password/questionid/answer
Merge pull request #4 from nkcfan/keychain

Add feature: keychain stores password/questionid/answer
Add license text for SSKeychain
修改下提示文字
优化，不再卡顿
//卡顿是由于用layer在cell上画了个圆角造成的，暂时的解决办法是截了个带圆角的图，设为背景。
cell的背景图
加个图片
Merge remote-tracking branch 'origin/master'
Merge pull request #5 from nkcfan/keychain

Add license text for SSKeychain
修复一个Keychain的小bug
Merge remote-tracking branch 'origin/master'