Build fails on snow leopard

[shrx]

I get build errors:

/Users/differenxe/Desktop/zbuc-imgurBar-7c7b452/imgur/ScreenshotController.m:42:37: error: use of undeclared identifier 'NSJSONSerialization' [2]
/Users/differenxe/Desktop/zbuc-imgurBar-7c7b452/imgur/ScreenshotController.m:41:5:{41:5-58:7}: warning: method '+sendAsynchronousRequest:queue:completionHandler:' not found (return type defaults to 'id') [2]

[reggi]

dmg works fine for me on snow leopard

[shrx]

This is the message I get

[zbuc]

I don't have a Snow Leopard system available to test with, if you figure out a fix feel free to submit and I'll merge it in.