Conda PKG building (local)

Binstar-build is still in flux -- I suggest moving away from the binstar's CI until things stabilize a bit more.  This PR fixes the meta.yaml and setup.py file for local building and uploading to binstar.  After this PR is accepted I can setup a daily or weekly cron routine to take care of building and uploading.

Fixes issue: #551

cc: @mwiebe
Hmm, i haven't looked at that.  I only added code which let me modify the version being passed to sdist.  Ideally, we'd switch to versioneer but that is a larger refactor