Urgent: Package.json fix for fatal install bug

Because I'm a fucking moron and didn't include the dependencies in package.json when I submitted my last pull request. I already had these node modules installed globally and it didn't throw any errors for me because of that, but installing handlebar-rider on a fresh folder threw multiple dependency failures because I failed to update package.json.

Sorry :-/

**EDIT:** Yeah... Because of a HUGE logic error that I just found, templates were actually being returned as empty strings no matter what. I have fixed that bug (that I caused) and it's here in this pull request as well.