Add flattr to rss feed

[bitboxer]

Instacast and other podcasting clients show a Flattr button inside of the player if a Flatter link is provided in the rss feed.

The definition for this can be found here : http://developers.flattr.net/feed/

It would be great if this link could be configured in the podcast.yaml file

[klaustopher]

This should also be able to use Auto-Submit-URLs with placeholders for the URL and title

[tisba]

We also have this on our list, pull requests are welcome :)

[bitboxer]

I think we should do a podcast-tools hackathon 😉

[klaustopher]

Great idea :)

[klaustopher]

Continued in #17