William Bautista

We have a missing documentatation for [no-anonymous-once](https://github.com/ember-best-practices/eslint-plugin-ember-best-practices/blob/5d1e4401af1647bd4f5ddd368cefdda5ee04181f/tests/lib/rules/no-anonymous-once.js) rule Thanks

Hi all, I would like to know if this plugin is actually working with Font Awesome 5, as I have tried to make it work and it seems is not....