Add Hogan.js to templates

Because you can't have Handlebars without it's Mustache roots, and [Hogan](http://twitter.github.io/hogan.js/) is the de-facto Mustache compiler in JS.

Also changed the Handlebars description to be a description rather than a pitch.
Merge pull request #32 from LewisJEllis/patch-1

Add Hogan.js to templates