Merge pull request #89 from slai/develop

Added ability to specify the host address to start the server on
Merge pull request #91 from slai/develop

Made the new 'host' property actually optional
Fix consistency error in the return for reponses to /minions URLs

Thanks to sashka_ua in IRC for the report.
Return a list for /minions URLs for multiple lowstate in requests

Addendum to 4b9ac38.
Added _links to the /minions return

This allows fetching the subsequent result of each job without having to
manually construct the URLs.
Updated docs for /minions example return
Add basic hypermedia info about available clients/formats
Added a currentmodule directive for shorter cross-references
Added documentation on the authentication step
Added cross-references
Added examples for the /run URL