Qt创建者-项目错误:Xcode不正确设置。您可能需要运行/usr/bin/xcodebuild来确认许可协议

I just installed Qt 5.5 and am using Qt Creator for the first time on OS X. When I first installed Qt, it gave me an error message 'Xcode 5 not installed' which I thought was strange, (I have the Xcode 7 beta), but the install completed successfully anyways.I just installed Qt 5.5 and am using Qt Creator