Help us sync media initiative modules

As already discussed on Twitter (https://twitter.com/slashrsm/status/507273841757143040). 

Media initiative moved all development to github (github.com/drupal-media). We still want to keep d.o. repos up to date. Currently we do it manually, which is obviously not very convenient. Would be great if we could automate that. 

Could you help us with that?
