I am at a point where I don't know how to solve this issue. I have getting 9 Apple Mac-O linker errors. Of course it's a bunch of error codes that I don't understand. You can have a look at the screenshot to better diagnose the issue at hand.
As you can see in there I am using parse as my backend, (Users, push notifications, messaging protocols...etc). I already have parse/parse.h imported in the AppDelegate.m, AppDelegate.h, ViewController.m and main.m file which sits in the supporting files folder in your project.