Adding canonical-path on dependecies

[diegofss11]

I would like to give a suggestion which is to replace the first npm install to this one: npm install --save-dev dgeni dgeni-packages canonical-path

Because only seeing on the grunt-file can realize that the canonical-path module is needed.

[petebacondarwin]

Well, although this is a nice utility (IMHO!!) I don't want to force people into thinking that you must use it. How about a little aside, that explains why one might want to use canonical-path in their grunt or gulp files, and then how to install it.