captainsubtle/minecraft-server-manager — pull request #4 by captainsubtle (2014-04-21 14:03:15+00:00)
Title: Get the minecraft snapshot version from the JSON

I think a lot of people need it. To use it, simply create a jargroup and write "minecraftSnapshot" instead of the URL. It works with versions like "00w00a" or "0.0.0".