Update README.md

Author: vendethiel

README.md

@@ -6,6 +6,6 @@ Shim repository for the [jQuery](http://jquery.com).
 Package Managers
 ----------------
 
-* [Bower](http://twitter.github.com/bower/): `jquery`
+* [Bower](http://bower.io/): `jquery`
 * [Component](https://github.com/component/component): `components/jquery`
 * [Composer](http://packagist.org/packages/components/jquery): `components/jquery`