fixes #39

Freshly installing yo, grunt and bower.

Running yo style-prototype
answering the Qs going into the new directory and typing:

$ grunt server

Leads to the following error

Loading "Gruntfile.js" tasks...ERROR

TypeError: Cannot call method 'forEach' of undefined
Warning: Task "server" not found. Use --force to continue.
Aborted due to warnings.

The only 'strange' thing about my setup maybe that I'm using OS X Mavericks.