Add option to specify which plugins to include in build.
Quick initial pass at code clean up / perf improvement. Use jQuery less often internally.
Missing semicolon.
Merge pull request #27 from davetodd/master

Incremental cleanup / perf improvements
fix `npm test` script, make `grunt verify` task viable on its own.

this changeset also updates the `travis` grunt task to `verify`, then `build`.