Matukio's social share is limited to Twitter, Facebook, and Google+. I need to be able to share on LinkedIn. I use AMPZ Social Sharing for my site, but when I try to share an event with AMPZ on LinkedIn, the wrong graphic is getting picked up.
A lot of social media looks to Open Graph to determine which image to use in a social share. How do I modify Matukio's Open Graph markup to designate the proper graphic to use in a share?