Update 2014-04-02-using-modules.md

Hmm.. this section feels pretty sparse content wise. Many repetitions of "{{x}}-name.js" is the convention... idk if highlighting the repetition (in this edit) helps tho

(oh, also wanted to add an entry for initializers)
Merge pull request #628 from landonwilkins/patch-4

Update 2014-04-02-using-modules.md