Readme: Add contributor instructions, for someone not looking at site…

… or wiki first.

README.md

@@ -8,6 +8,18 @@ If you want to use jQuery UI, go to [jqueryui.com](http://jqueryui.com) to get s
 If you are interested in helping developing jQuery UI, you are in the right place.
 To discuss development with team members and the community, visit the [Developing jQuery UI Forum](http://forum.jquery.com/developing-jquery-ui).
 
+For contributors
+---
+If you want to help and provide a patch for a bugfix or new feature, please take
+a few minutes and look at [our Getting Involved guide](http://wiki.jqueryui.com/w/page/35263114/Getting-Involved),
+in particular check out the [Coding standards](http://wiki.jqueryui.com/w/page/12137737/Coding-standards)
+and [Commit Message Style Guide](http://wiki.jqueryui.com/w/page/25941597/Commit-Message-Style-Guide).
+
+In general, fork the project, create a branch for a specific change and send a
+pull request for that branch. Don't mix unrelated changes. You can use the commit
+message as the description for the pull request.
+
+
 For committers
 ---
 When looking at pull requests, first check for [proper commit messages](http://wiki.jqueryui.com/w/page/12137724/Bug-Fixing-Guide).