Update to recommended project settings

Example/UICatalog.xcodeproj/xcshareddata/xcschemes/UICatalog.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1100"
+   LastUpgradeVersion = "1110"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"

FLEX.xcodeproj/project.pbxproj

@@ -1023,7 +1023,7 @@
 			isa = PBXProject;
 			attributes = {
 				CLASSPREFIX = FLEX;
-				LastUpgradeCheck = 1100;
+				LastUpgradeCheck = 1110;
 				ORGANIZATIONNAME = Flipboard;
 				TargetAttributes = {
 					1C27A8B51F0E5A0300F0D02D = {
@@ -1345,7 +1345,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				CLANG_WARN_STRICT_PROTOTYPES = NO;
-				CODE_SIGN_IDENTITY = "iPhone Developer";
+				CODE_SIGN_IDENTITY = "";
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "";
 				CODE_SIGN_STYLE = Manual;
 				DEFINES_MODULE = YES;
@@ -1372,7 +1372,7 @@
 			isa = XCBuildConfiguration;
 			buildSettings = {
 				CLANG_WARN_STRICT_PROTOTYPES = NO;
-				CODE_SIGN_IDENTITY = "iPhone Developer";
+				CODE_SIGN_IDENTITY = "";
 				"CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "";
 				CODE_SIGN_STYLE = Manual;
 				DEFINES_MODULE = YES;

FLEX.xcodeproj/xcshareddata/xcschemes/FLEX.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1100"
+   LastUpgradeVersion = "1110"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"