Upload surge model output from collector machine

Using the Django management command `import_surge_predictions`

This isn't the nicest solution (having to check out the entire Django
project) but it's currently probably less evil than having a writeable
API and having to worry about credentials etc.

https://www.pivotaltracker.com/story/show/75795728 [#75795728]
Merge pull request #15 from sealevelresearch/upload-to-heroku-api

Upload surge model output from collector machine