JSON format for screenshots and videos
Decode media URL arguments before parsing
Changed icons key to icon
Modified README for new game submission and game detail format
Catch errors for invalid screenshots and videos URL in game submission.
Updated game submission and edit endpoints to accept json blob (#95 #105 #114 #115)
Fixed comments, and ensure that required fields cannot be empty set. (Fixes #95 #105 #114 #115)
Merge pull request #118 from cvan/game-details

Updated game submission and edit endpoints to use json blob.