SFHFKeychainUtils renamed to LTHKeychainUtils to avoid conflicts with SFHFKeychainUtils already present in the project.
All the rights and thanks go to the original author, Buzz Andersen.
Localizations add zh-Hans-CN support
Merge pull request #55 from banxi1988/master

Localizations add zh-Hans-CN support
Extract a _makeDigitField method to simplify _setupDigitFields method
Merge pull request #56 from banxi1988/master

Extract a _makeDigitField method to simplify _setupDigitFields method
Add properties.
Add enterNewPasscodeString and implement properties in methods.
Use enterOldPasscodeString when changing passcode. String variables initialized if not given custom value.
Write briefs for new string variables.
Replace final static string with respective variable.
Remove _setupStrings, move to _loadDefaults.
Merge pull request #57 from neerajbaid/master

Customize strings that appear when entering, changing, etc. passcode.
Tidied up defaults loading.
When pushed, the rotation wasn’t handled.
Fixed a bug where closing the app reset the failed attempts counter.
Improved failed attempts logic: it now doesn’t reset unless when password is entered successfully, or app is killed.
Removed deprecated methods.
Fix localize problem for enter new passcode
Merge pull request #62 from yonekawa/master

Fix localize problem for enter new passcode
fix bug where keyboard does not appear on iOS6
Merge pull request #63 from DavidBenko/ios6

fix bug where keyboard does not appear on iOS6
updated from upstream