http://sja.co.uk/controlling-which-ios-keyboard-is-shown
https://developer.apple.com/library/safari/documentation/AppleApplications/Reference/SafariHTMLRef/Articles/InputTypes.html
http://sja.co.uk/controlling-which-ios-keyboard-is-shown
https://developer.apple.com/library/safari/documentation/AppleApplications/Reference/SafariHTMLRef/Articles/InputTypes.html