Convert project to a jQuery plugin (Fixes #3)
Convert project to a jQuery plugin (Fixes #3)

This commit converts the old accordion.js into a true jQuery plugin. While
this changes the way that the accordion is initialized, not much else has
changed at this point. We still use global variables rather than a
settings object, and there are some other questionable decisions that have
been carried over from the previous version. At least we're caching
elements now.

mlms13/JS-Accordion