Refs #336. Continued cleaning up README.
Refs #336. Added multiple scripts to the travis.yml to test several versions of jquery.
Refs #336. Added before script back to travis settings.
Refs #336. Switched out the 1.4 version of jQuery used by travis so that it uses a version that passes the tests. Updated README so that it includes instruction to install grunt-cli.
Refs #336. Updated the docs with information on the new testing methods with Grunt and Travis.