Hogan.js: Fix require path

When using hogan.js, the engine differs from the npm package name (see https://github.com/visionmedia/consolidate.js/blob/e3f2e9499e12d3ac357d58eaf25fbee6d80342ac/lib/consolidate.js#L449).
Merge pull request #1 from backflip/master

Hogan.js: Fix require path