Use iOS 8.0 deployment target on demo project, just to silence warning [objc]

Author: cbpowell

MarqueeLabel/MarqueeLabel.xcodeproj/project.pbxproj

@@ -385,7 +385,7 @@
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				INFOPLIST_FILE = "$(SRCROOT)/Info.plist";
-				IPHONEOS_DEPLOYMENT_TARGET = 6.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.charlespowell.MarqueeLabelDemo;
 				PRODUCT_NAME = "$(TARGET_NAME)";
@@ -397,7 +397,7 @@
 			buildSettings = {
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				INFOPLIST_FILE = "$(SRCROOT)/Info.plist";
-				IPHONEOS_DEPLOYMENT_TARGET = 6.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.charlespowell.MarqueeLabelDemo;
 				PRODUCT_NAME = "$(TARGET_NAME)";