Added support for coffee and litcoffee extension watching without .

In the docs for nodemon's [extension watch list option](https://github.com/remy/nodemon#specifying-extension-watch-list), it states you are allowed to omit the `.` for file extensions, but when running a CoffeeScript server, the `node` command is used instead of `coffee` because the conditional only picks up `.coffee` and `.litcoffee`.

I simply changed the conditional to accommodate both variations of the extension watch command(with and without `.`).