18F/18f.gsa.gov — pull request #404 by konklone (2014-12-01 02:36:34+00:00)
Title: Fix image URL for webhooks post

I thought I included this in my last PR, turns out I forgot to commit it. It's not instrumental to fixing the feature, I just noticed along the way that our webhooks post had failed to specify an `image` field. This fixes that, so it uses the header image as the share image.