Nature has published a paper, Nature, 482, 485 488 (23 February 2012), arguing that "anything less than the release of source programs is intolerable for results that depend on computation."
The below addition creates a new first page for RevTeX papers.
"Git is a distributed revision control system with an emphasis on speed. Git was initially designed and developed by Linus Torvalds for Linux kernel development. Every Git working directory is a full-fledged repository with complete history and full revision tracking capabilities, not dependent on network access or a central server."