Fullscreen support in mac template app

build/osx/TemplateApp/TemplateApp/Base.lproj/MainMenu.xib

@@ -69,6 +69,7 @@
         </menu>
         <window title="TemplateApp" allowsToolTipsWhenApplicationIsInactive="NO" autorecalculatesKeyViewLoop="NO" releasedWhenClosed="NO" animationBehavior="default" id="QvC-M9-y7g">
             <windowStyleMask key="styleMask" titled="YES" closable="YES" miniaturizable="YES" resizable="YES"/>
+            <windowCollectionBehavior key="collectionBehavior" fullScreenPrimary="YES"/>
             <windowPositionMask key="initialPositionMask" leftStrut="YES" rightStrut="YES" topStrut="YES" bottomStrut="YES"/>
             <rect key="contentRect" x="335" y="390" width="480" height="360"/>
             <rect key="screenRect" x="0.0" y="0.0" width="2560" height="1417"/>