Update contributors
Merge pull request #198 from stefanogualdi/update_about_page

Update contributors
Support for metrics console reporter
Extract the netty version.
Don't halt the processing pipeline when trying to serve a directory with no valid index file, just go to the next handler (#199).
Make the CodeHaleModule API slightly more convenient.
Some tweaks to this test.
First cut at WebSockets support, still very rough (#133).
Expose whether the websocket is still open or not (#133).
Fix case.
Delete Websockets.java

Case mixup.
Allow additional close handlers to be registered on the websocket (#133)
Add console reporterto metrics enabled check
Removing unused test dependencies after test tweak
Improve the WebSocket API (#133)
Fix handling of compile static property.
Generic signature fix.
Fix path param handling where there are multiple params on a path with no /'s.
Better error handling of compile failures in Ratpack.groovy script.
Canonicalise the script name for better error reporting.