Where is the Halo 4 fileshare?

I took some great screenshots and I’d like to see them on here and post them on my group’s website, but I can’t find a fileshare option in our halo 4 stats. I’m assuming they don’t have it up and running yet, but just in case I’d appreciate it if someone can tell me the details. I don’t get onto this site much anymore but it really is useful for info and rounding up photos. Thanks for your help guys!