Set SWIFT_VERSION 2.3

Author: ishkawa

Action.xcodeproj/project.pbxproj

@@ -127,6 +127,7 @@
 				TargetAttributes = {
 					BE73AD1F1CDCD101006F8B98 = {
 						CreatedOnToolsVersion = 7.3;
+						LastSwiftMigration = 0800;
 					};
 				};
 			};
@@ -282,6 +283,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				SWIFT_VERSION = 2.3;
 			};
 			name = Debug;
 		};
@@ -303,6 +305,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.ashfurrow.Action;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
+				SWIFT_VERSION = 2.3;
 			};
 			name = Release;
 		};