make streamie compatible with socket.io v0.7

This needs an update of the locally installed socket.io version, too.

It uses the built-in delivered socket.io-client lib. This may cost you some traffic. If this is not okay, tell me and I will add the socket.io-client back in as a submodule.

Another thing: I configured my editor to remove all trailing whitespace. Therefore I have another commit removing these in all *.js files. If you want this included, please tell me.