Sending optional Params

[patrickrobbins]

If you try to deselect some parameters that are optional, it will leave in the extra '&' char. this breaks the model binder in WebApi. also if you leave them blank, it is passing in the string of the name. like so "{paramName}"

[patrickrobbins]

I have sent a pull request to fix the URL when you remove the param from the request.