Right now, the supported system is Disqus, more options will be available. Livefyre was on the list, but since the "Community Comments" application will be dropped there is not a reason to keep it. Everyone should migrate from Livefyre to another comments system.
There is no need to edit a single line of code
To setup the comments is really easy, take a look at the animated gif below. Just three steps:
- Open the Aftertype Assistant (Shift + 1 + 2)
- Choose the Comments System option
- Enter your disqus shortname/url and save