Started Express Method

In continuation of #68 and #70 here is my start to the express method using the sass and less middleware implementations to go on. It should work but I'm not sure what to do about testing as I don't think it'd be worth adding express as a dev dependency for a test? Also I'm not exactly happy with how it gets information about imports but it's all I could think of. I thought might as well commit my attempt at it so it can be used as a base.