Add/checkselect

Trying to add direct checkbox and select dropdown support but can't get the tests to pass. Think it makes sense to break the tests for each of those methods apart...  Was trying to run them against a raw custom jsFiddle but jsfiddle ends up wrapping it in an iframe (even if you use the raw src url) so that you can't reach it with js... will need to use a different test site
should use `express` as a devDependencies, so  tests will be maintainability && run fast.