Update footer of readme.

README.md

@@ -10,4 +10,4 @@ Or via one of the `render«format»()` methods added to controllers …
 
 Please see the [User Guide](http://gpc.github.com/grails-rendering/ "Grails Rendering Plugin @ GitHub") for more information.
 
-The plugin is released under the [Apache License 2.0](http://www.apache.org/licenses/LICENSE-2.0.html "Apache License, Version 2.0 - The Apache Software Foundation") and was contributed to the Grails community by the good people at [Software Projects](http://sp.com.au/ "Software Projects - Home").
+The plugin is released under the [Apache License 2.0](http://www.apache.org/licenses/LICENSE-2.0.html "Apache License, Version 2.0 - The Apache Software Foundation") and is produced under the [Grails Plugin Collective](http://gpc.github.com/).