Adds Digital Ocean provider docs, re-adds Joyent to the navigation.json, and supporting media files for DigitalOcean provider configuration.
Adds DigitalOcean to the proper navigation template, and adds suggested feedback for the document
Fixed a stray 'an'
Merge pull request #181 from chuckbutler/digitalocean

Adds Digital Ocean provider docs, re-adds Joyent to the navigation.json,...