Bukkit/Bukkit-JavaDoc — pull request #15 by computerdude5000 (2013-03-28 02:12:00+00:00)
Title: Updated .gitignore to ignore all .DS_Store files just not the one in the root directory 

same reason as https://github.com/Bukkit/CraftBukkit/commit/ff7c371a81437ec9f88b1134bcc322308b796a4e