Bump version to 1.15

Author: Colin Harris

GoVPN.xcodeproj/project.pbxproj

@@ -519,7 +519,7 @@
 					"$(inherited)",
 					"@executable_path/../Frameworks",
 				);
-				MARKETING_VERSION = 1.4;
+				MARKETING_VERSION = 1.5;
 				PRODUCT_BUNDLE_IDENTIFIER = com.colharris.GoVPN;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OBJC_BRIDGING_HEADER = "GoVPN-Bridging-Header.h";
@@ -542,7 +542,7 @@
 					"$(inherited)",
 					"@executable_path/../Frameworks",
 				);
-				MARKETING_VERSION = 1.4;
+				MARKETING_VERSION = 1.5;
 				PRODUCT_BUNDLE_IDENTIFIER = com.colharris.GoVPN;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OBJC_BRIDGING_HEADER = "GoVPN-Bridging-Header.h";