Build only active arch

Author: hannesa2

MGScopeBar.xcodeproj/project.pbxproj

@@ -431,6 +431,7 @@
 				INFOPLIST_FILE = Info.plist;
 				INSTALL_PATH = "$(HOME)/Applications";
 				MACOSX_DEPLOYMENT_TARGET = 10.9;
+				ONLY_ACTIVE_ARCH = YES;
 				PRODUCT_BUNDLE_IDENTIFIER = "com.yourcompany.${PRODUCT_NAME:identifier}";
 				PRODUCT_NAME = MGScopeBar;
 				SDKROOT = macosx;