Upgrades Hogan version to 3.0.0

Hello,
I manually updated the Hogan version to 3.0.0. I don't think this was the best way to do it but I needed a newer version of Hogan because of an old bug about strings not treated as falsy. I updated the version of hogan in the repo by hand because the hogan.js@3.0.0 is not in the NPM registry yet.
 
It also removes the node_modules to use a package.json

I would appreciate your thoughts about it.