Enables Handlebars Helpers in the template

In the spirit of the current milestone--to make working with the template easier--I've made it possible to use Handlebars Helpers in the template.

There are two example helpers included in the _test_ folder. See the _README_ for instructions on how to enable them and use them in the template.

Most helpers I saw while doing this that were CommonJS modules used the `module.exports.register` format for loading and registering.