Factual/drake — pull request #125 by morrifeldman (2014-03-24 20:52:13+00:00)
Title: Add demos/clj-frontend and change some names

This commit Mainly adds demos/clj-frontend based on examples prepared for the [wiki page](https://github.com/Factual/drake/wiki/A-Clojure-Frontend-to-Drake) for clj-frontend.

In addition to adding a demo, this commit also modifies clj-frontend by
changing the `workflow` function to `new-workflow` and changing
`parse-tree` to `w-flow` in the inputs to several functions. Changing
parse-tree to w-flow seems to better hide the workflow implementation
details from users.