Hi,
You download actions from these repositories via the
Ecosystem browser. that's the best way, cause it's going to download it AND install it in your project in one click. Else you need to download the file ( click on the "raw" button to download a file from github), and then manually move it or copy it from your download folder to your project, too many steps for me afaik
Then, to register for notifications, simply create an account on github and then you can "watch" any repositories you want and you'll receive emails. OR you can simply click on the rss links and then use your favorite rss reader to consume information. I use
Netvibes, and I can't do without, I have set it up so that Ic an Unity news, Asset store news, PlayMaker forum news, and all the various blog and site news revolving around Unity. I also use it for watching my google analytics on various sites, including ecosystem traffic ( >30K access since the launch in april 2014).
I do plan to include a news feed system built in the Ecosystem, using either rss or twitter, but the added work did not catch with my day. I started an rss feed, but I need to find an automated way to generate content, cause it's too much for me to commit, then post on the forum, then make an rss entry.. I am not really diving into these social tools so well on that regard...
I saw you forked the UI rep. It's only a good idea if you are going to submit and edit content for fixing bugs or providing new actions or samples, else it's really a place for the ecosystem to search and serve content, that is don't fork this rep and start a project based on this, that's not going to work out.
however, I STRONGLY advise you use github for EVERY project you do, you can have privte rep that only you or collaborators have access too, and then it becomes completly stress free to upgrade and revert if it doesn't work out or make brancjes for new features and then merge them when it's done and tested. etc etc.
Bye,
Jean