Needs Updating

I've recently updated to 4.7 and am running Babel v6.6.0, which is causing issues because this package uses 6.18.0.

Would this fix be to simply update the Babel version in this package?

Getting the below upon 'ember s':

The following outdated versions are found in your project:

* ember-cli-babel@6.18.0, currently used by:
  * ember-cli-markdown-resolver@0.1.3
    * Depends on ember-cli-babel@^6.6.0

Template Compiler Error (broccoli-persistent-filter:TemplateCompiler) in ember-cli-markdown-resolver/templates/components/markdown-menu-item.hbs

The `link-to` keyword was used incorrectly. It was used as a call expression, but its valid usages are:

- As an append statement, as in: {{link-to}}

- As a block statement, as in: {{#link-to}}{{/link-to}}

Error caused by:

|
|  {{link-to item.attributes.title linkTo itemPath click=(action "onClick")}}
|

(error occurred in 'ember-cli-markdown-resolver/templates/components/markdown-menu-item.hbs' @ line 2 : column 2)