Merge pull request #33 from nvembar/master

Adding api_key as a required field
Update api-docs.json

Fix broken link to change log.
Merge pull request #35 from shawnjohnson/master

Update api-docs.json
Update changelog.md
Merge remote-tracking branch 'upstream/master'
Merge pull request #36 from shawnjohnson/master

Update changelog.md
Sync with NREL docs.
Remove defunct references to daily rate limit.

Also update description of how the rate limits are applied (on a rolling
basis, instead of top-of-the-hour).
Removing old myusa api.
Switch to Middleman from nanoc for static site compiling:

This is in semi preparation for redoing the data.gov theme, but this was
also a cleanup I've been wanting to do for a while for a few reasons,
but mainly:

- A lot of the nanoc customizations are simply baked into middleman, so
it cleans up various things (asset pipeline, syntax highlighting, etc).
- Middleman's live server preview is quite nice to work with when
developing new content, so hopefully this will make it easier for other
users to work against this project locally.
Merge pull request #40 from GSA/middleman

Switch to Middleman from nanoc for static site compiling
Let's try to fix assets for how we have routing setup on production.
Use bundler binstubs in readme instructions.
Fix swagger host during publishing.
First pass at getting the data.gov redesign theme in place.

More cleanup is needed for the layout of api.data.gov, but I think this
at least gets the template in place.
Cleanup the layout for the new redesign.

Also, drop the community page, since it wasn't particularly relevant any
more, and add a 404.html page for github pages 404 handling.
Fix layout of beta banner to better work on the redesign.

- Move the banner lower, so it doesn't overlap with the header
  navigation on narrower screens and also to make it look more related
  to api.data.gov
- Adjust styles and colors so it's fits a bit better with the flatter
  redesign.
Add link to Data.gov's CKAN API and try to clarify this service.
Add link to FBOpen's API since it's using this service.
Updates for Version 3