This is the Objective-C class category template that Xcode 6 so kindly removed...
Clearly, Apple wants us to welcome our Swift extension overlords.
I don't assume any ownership of this! Yanked right from Xcode.app 5.1.1
eliperkins/ObjCClassCategoryTemplate
Xcode 6 removed the Objective-C class category template, so here's Xcode 5's!
Objective-C