Support Flash websocket policy

[abl]

Earlier today I needed to test some changes in IE8 and really did not want to give up LiveReload.

I was able to glue https://github.com/gimite/web-socket-js together with LiveReload...and it worked surprisingly well. I had to run a separate websocket policy server (and add the necessary JS/SWF to the page from web-socket-js) in order to get it working, though. Great explanation of the problem at http://www.lightsphere.com/dev/articles/flash_socket_policy.html - basically, Flash will send <policy-file-request/> as a string to port 843 and then to the websocket port. It expects a policy in return such as:

<cross-domain-policy>
     <allow-access-from domain="*" to-ports="35729" />
</cross-domain-policy>

At that point this workaround works more or less as a real WebSocket does - enough for LiveReload to function, at least for me. :)

There's actually already an implementation of a Flash policy server in node.js if that helps: https://github.com/3rd-Eden/FlashPolicyFileServer

Thanks for saving me hours of jamming on the F5 key!