Add plumbing for rollup creation and deletion through soda fountain.

Soda fountain translates the column names on the rollup on the way through to
data coordinator.  Currently supports PUT and DELETE, GET is not yet fully
implemented.
Bump to 0.2.0 soql-reference release.
Merge pull request #9 from socrata/marcs/rollups

Add plumbing for rollup creation and deletion through soda fountain.