Add object only api

[thorst]

Allow user to only pass in an object, with a key for url. This commit maintains backwards compatibility.

This is optional, I like passing 1 (potentially complex) object to a function. This is cleaner in my opinion, and for only a couple of lines I think its should be added in the base project.

I use this by defining a set of defaults I always want to use, then when I'm ready to call the plugin I extend my setting array with the specifics of that call.

Again, this is purely preference, but I prefer this api, and others may also.

[thorst]

Hows that?

[lencioni]

Looks good. Could you update the readme to reflect this change? @mkdynamic what do you think about this?

[thorst]

Ill do that today.

[thorst]

Any chance this could land?

[mkdynamic]

Looks good to me fwiw. @lencioni