Probably adding it in footer manually? No idea, but I found sometime back in github the repo for generating this . By @thomas_jung
Edit: Should be like below (just replace the userid), from craig
A message or two further down, https://groups.community.sap.com/t5/coffee-corner/community-showcase-badges/m-p/881/highlight/true#M... you just need to add that to the signature field here in your profile. But of course change the user profile to your own.