This used to just be an icon, but now it's a full-fledged installer. Load up the PPA: [link]
. Or, if you'd prefer the manual script, it's attached (but it won't be getting updates whereas the PPA will).
Includes 48- and 64-pix icons I made in Inkscape to look particularly perfect in elementary (but also look good in Ubuntu and elsewhere). Also has QuickList items for your screenshots folder, texture packs folder, and the Minecraft Wiki!