Adds promoted field to streams

[Finishes #74983380]
Merge pull request #76 from rhinobird/promote-streams

Adds promoted field to streams
Adds full url method for streams
Adds link to live stream
Adds ability to persist a custom tweet message

[#74982248]
Adds option to enable custom tweet
Merge pull request #77 from rhinobird/custom-tweet

Custom tweet
Adds promoted to the stream json output
Updates promoted flag on timeline
Make promoted timeline to show first
Merge pull request #78 from rhinobird/promoted-timeline

Promoted timeline
Revert "feat(routes): Adds a way to change the api namespaces path"

This reverts commit a3099777487303dd5bc8d90dd7b95861bb72bebc.

Conflicts:
	config/routes.rb
feat(): Fix the api namespace to v1