Bump Xcode compatibility check and minimum Xcode version

Examples/GUI/Cocoa/SimpleCocoaVTK.xcodeproj/project.pbxproj

@@ -3,7 +3,7 @@
 	archiveVersion = 1;
 	classes = {
 	};
-	objectVersion = 46;
+	objectVersion = 48;
 	objects = {
 
 /* Begin PBXBuildFile section */
@@ -317,10 +317,10 @@
 		2A37F4A9FDCFA73011CA2CEA /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
-				LastUpgradeCheck = 1010;
+				LastUpgradeCheck = 1150;
 			};
 			buildConfigurationList = C05733CB08A9546B00998B17 /* Build configuration list for PBXProject "SimpleCocoaVTK" */;
-			compatibilityVersion = "Xcode 3.2";
+			compatibilityVersion = "Xcode 8.0";
 			developmentRegion = English;
 			hasScannedForEncodings = 1;
 			knownRegions = (