Accept Xcode build validation suggestions

- Update last upgrade check in project file
- Add recommended CODE_SIGN_IDENTITY setting of '-' to code sign config file

Author: dempseyatgithub

BuildSettingExtractor.xcodeproj/project.pbxproj

@@ -261,7 +261,7 @@
 		53719E8719BF4C6D005D3DE0 /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
-				LastUpgradeCheck = 1000;
+				LastUpgradeCheck = 1110;
 				ORGANIZATIONNAME = "Tapas Software";
 				TargetAttributes = {
 					53719EAF19BF4C6D005D3DE0 = {

Config/BSE-CodeSigning.xcconfig

@@ -31,3 +31,15 @@
 // Setting this to Manual, otherwise Xcode seems to prefer slipping back into Automatic mode
 
 CODE_SIGN_STYLE = Manual;
+
+
+// Code Signing Identity
+//
+// The name, also known as the *common name*, of a valid code-signing certificate in a
+// keychain within your keychain path. A missing or invalid certificate will cause a
+// build error.
+
+// The DEVELOPMENT_TEAM setting supercedes this setting.
+// Xcode project validation recommended setting the value to '-'.
+
+CODE_SIGN_IDENTITY = -