This moves things around to be a bit more organized:
* Puts our standard header with links to pelias/pelias, Mapzen Search,
etc first
* moves the badges together
* The link to the documentation was going to a silly page that just
linked to another page, so it's a direct link now.
* Adds a small description sentence
README.md
-Edit a bunch of unrelated things... sorry. ;)
-Condense the documentation of different `npm run`nable commands
to one list.
-Remove the note about Travis, since that applies to virtually
all the Pelias repos and is documented elsewhere.
-Point the API docs hyperlink to `DOCS.md`.