theming docs (closes #246, closes #249)

README.md

@@ -326,6 +326,8 @@ Each theme is available as a separate stylesheet. To change theme you will need
 <link rel="stylesheet" href="css/theme/default.css" id="theme">
 ```
 
+If you want to add a theme of your own see the instructions here: [/css/theme/README.md](https://github.com/hakimel/reveal.js/blob/master/css/theme/README.md).
+
 
 ## Development Environment 
 
@@ -344,5 +346,5 @@ If you want to customise reveal.js without running grunt.js you can alter the HT
 
 MIT licensed
 
-Copyright (C) 2011-2012 Hakim El Hattab, http://hakim.se
+Copyright (C) 2011-2013 Hakim El Hattab, http://hakim.se