A while back we (as a company) official changed from trading as RunRev Ltd. to LiveCode Ltd. We've gradually been updating everything to reflect this and one of the last things to do is to update our github organizational account name. This change will mean the URL for the LiveCode project home on github will change from https://github.com/runrev
We currently plan to make this change on Monday 7th September 2015. GitHub places redirects for a time, but it will be necessary to eventually update any remote URL references you have in your checked out repositories to the new URLs. You can easily do this using the 'git remote' command.
I'll post here again as soon as the switch is made on Monday, and please post any problems and issues you encounter with it here, after that has occurred.
Hopefully it will all go smoothly!