Here's an auto convert of the plugin if you want to try.
However, I could not load my sample up to the gamedistribution.com website to test (seemed to hang in the upload state, I was uploading an html5 zip file renamed to <gamename>.hmtl5.)
Perhaps someone else can try (it does not seem to work in C3 preview mode due to CORS issues, which kind of makes sense, it may need to run on their website with appropriate CORS permissions, etc.)
gamedistribution.c3addon
Please let me know your results.