added form-ressources

README.md

@@ -61,6 +61,12 @@
 - [The Shadow-DOM](http://glazkov.com/2011/01/14/what-the-heck-is-shadow-dom/)
 - [HTML5 Placeholder Styling with CSS](http://davidwalsh.name/html5-placeholder-css)
 - [List of Pseudo-Elements to Style Form Controls](http://tjvantoll.com/2013/04/15/list-of-pseudo-elements-to-style-form-controls/)
+- [CSS3 Pseudo-Classes and HTML5 Forms](http://html5doctor.com/css3-pseudo-classes-and-html5-forms/)
+- [HTML5 Form Validation Examples](http://www.the-art-of-web.com/html/html5-form-validation/)
+- [HTML5 Form Errors With CSS3](http://demosthenes.info/blog/462/Goodbye-JQuery-Validation-HTML5-Form-Errors-With-CSS3)
+- [formFive](http://etiennetalbot.github.io/formFive/) - Polyfill for legacy-browsers
+- [On the styling of forms ](http://www.brucelawson.co.uk/2013/on-the-styling-of-forms/)
+- [New Form Features in HTML5](https://dev.opera.com/articles/new-form-features-in-html5/)
 
 ### German