Make IQ work when keyboard is already shown

Make IQKeyboard work when the keyboard is already shown and the
UITextField/UITextView becomes first responder (in this case
UIKeyboardWillShowNotification is not fired). Also IQ before this
change didn't work for me for UITextView (worked only for UITextField).
After the change IQ is working well both for UITextField and UITextView.
Merge pull request #6 from heefan/master

typo on disable ;)
Merge branch 'master' of https://github.com/hackiftekhar/IQKeyboardManager

Conflicts:
	KeyboardTextFieldDemo/IQKeyBoardManager/IQKeyBoardManager.m
Adding keyboardDistanceFromTextField only once instead of every time the frame is adjusted
Merge pull request #7 from mrvincenzo/master

Adjust frame correctly when switching between field when keyboard is already shown
Readme updated.
Update README.md
Updated 'iOS NSNotification Mechanism'.
Update README.md
Fixed UITtextView, UIWebView issue. Toolbar category changed from UITextField to UIView, Fixed Xcode 4.2 compilation issue, Changed notification from UIKeyboardDidShow to UIkeyboardWillShow, Added WebViewController
Preparing to commit for cocoapods
Comment updated
Release 1.2
Documentation comment added, Normal comment updated.UIView new category method added for cancel/done button, Code rearranged, Class name changed
Header updated
Spelling mistake corrected
Spelling mistake corrected
Added support for iOS7 style previous/next buttons, Change class structure
Added Screenshot
Added images