changed the web gui to render objects values

Hey, thanks a lot for creating this project, it is something I really needed.

The web gui is really useful but all of my params are objects so it is hard to see what is in them.
Doing a stringify like this was the path of least resistance, im using it in my fork and find it useful.
Merge pull request #5 from henryoswald/patch-1

changed the web gui to render objects values