Body parameters are now handled correctly.

Fixed a bug that caused body parameters to not be sent correctly through
swagger.js due to its inability to deal with body parameters
automatically.

fixes #1
From a unit test perspective, I would make sure it can parse out both functions (as you have it) as well as 'standard' channel variables of a simple key/value pair.

Granted, from the library perspective it is probably the same, but those are the two use cases that get used here.