Merge pull request #106 from aleufms/master

Fixed the calculation of content Inset when using the method insertRowAtIndexPath: when keyboard is visible
Addressed some build warnings
Make 'scrolling to active textfield' available for cases when their delegate is not set to TPKeyboardAvoidingViews
Avoid crash caused by deallocing parent during scroll

Closes #68
Addressed some build warnings in sample app
Updated podspec
Merge pull request #112 from alexgarbarev/master

Make 'scrolling to active textfield' available for cases when their dele...