Update Demo project with recommended settings

Author: Edouard Siegel

Demo/ADZipURLProtocolDemo.xcodeproj/project.pbxproj

@@ -583,7 +583,7 @@
 			isa = PBXProject;
 			attributes = {
 				CLASSPREFIX = AD;
-				LastUpgradeCheck = 0510;
+				LastUpgradeCheck = 0610;
 			};
 			buildConfigurationList = 7A0EC6491535D8ED00E5F54A /* Build configuration list for PBXProject "ADZipURLProtocolDemo" */;
 			compatibilityVersion = "Xcode 3.2";
@@ -880,9 +880,11 @@
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
 				COPY_PHASE_STRIP = NO;
+				ENABLE_STRICT_OBJC_MSGSEND = YES;
 				GCC_C_LANGUAGE_STANDARD = gnu99;
 				GCC_DYNAMIC_NO_PIC = NO;
 				GCC_OPTIMIZATION_LEVEL = 0;
@@ -928,9 +930,11 @@
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
 				COPY_PHASE_STRIP = YES;
+				ENABLE_STRICT_OBJC_MSGSEND = YES;
 				GCC_C_LANGUAGE_STANDARD = gnu99;
 				GCC_PREPROCESSOR_DEFINITIONS = "CONFIGURATION=$(CONFIGURATION)";
 				GCC_VERSION = com.apple.compilers.llvm.clang.1_0;
@@ -975,9 +979,11 @@
 				CLANG_WARN_EMPTY_BODY = YES;
 				CLANG_WARN_ENUM_CONVERSION = YES;
 				CLANG_WARN_INT_CONVERSION = YES;
+				CLANG_WARN_UNREACHABLE_CODE = YES;
 				CLANG_WARN__DUPLICATE_METHOD_MATCH = YES;
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
 				COPY_PHASE_STRIP = YES;
+				ENABLE_STRICT_OBJC_MSGSEND = YES;
 				GCC_C_LANGUAGE_STANDARD = gnu99;
 				GCC_PREPROCESSOR_DEFINITIONS = "CONFIGURATION=$(CONFIGURATION)";
 				GCC_VERSION = com.apple.compilers.llvm.clang.1_0;