Merge pull request #1 from eriksson/master

Implementing RSS method
Merge pull request #2 from eriksson/master

UI improvements.
Added procfile for heroku use
Changing starting port to read environment var
FB key now comes from environment var
Changing host to 0.0.0.0
Fixed bug in controller
Showing only 140 chars (max) for each post
Try fetch images from source url (if available)
Try to fetch descriptions automatically, if not present.