fix(templates): correct coffee provider template

The current coffee script template has a syntax error that prevents it from being converted into javascript.  In addition, the current template produces a skeleton provider which doesn't pass a "grunt test" out of the box.  This pull request fixes the syntax error and corrects the coffee script code to produce a skeleton that passes the sample test out of the box.  It also tweaks the syntax of the coffee script to fall in line with general practices.