Add option to provide different socket.io version (#106)
Update to socket.io 1.0.6; add test for socket.io `path`.

Conflicts:
	Cakefile
	package.json
	tests/assets.coffee
Updated stylesheets

Conflicts:
	package.json
Updated dependencies (except Express)

Conflicts:
	package.json
Update devDeps (except `request`).

Conflicts:
	package.json
Made `express` a soft (runtime) dependency.

(This is also undocumented at this time so that I can do more tests.)