Make coffee-script a devDependency

[thompsnm]

Could you please make coffee-script a devDependency rather than a regular dependency? I only today discovered that coffee-script was being pulled into my project when my builds started failing due to this issue. I personally have no need of coffee-script and would prefer that it isn't pulled in. Unfortunately, the csextends module is itself a transitive dependency five layers deep in my dependency tree, so I have no option to remove it from my code base.

[balupton]

good point, will do the change now

[balupton]

released to v1.2.0 sorry it took so long

[thompsnm]

No worries, thank you!