Bug Fix and Extend Plugin Template

I've extended the plugin template, it now sports an example settings group, example setting and example hook. Unfortunately due to the way I made it (and due to my experience in making Snippets, or lack thereof), I accidentally canceled out the cycling action, where you could replace the default text by tabbing through it.

Euan's template also had a typo in it that was bugging me and causing a graphical glitch, so I fixed that too. :-)