Updated to Xcode 9.1

GCDWebServer.xcodeproj/project.pbxproj

@@ -856,7 +856,7 @@
 		08FB7793FE84155DC02AAC07 /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
-				LastUpgradeCheck = 0900;
+				LastUpgradeCheck = 0910;
 				TargetAttributes = {
 					CEE28CD01AE004D800F4023C = {
 						CreatedOnToolsVersion = 6.3;

GCDWebServer.xcodeproj/xcshareddata/xcschemes/GCDWebServers (Mac).xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0900"
+   LastUpgradeVersion = "0910"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"

GCDWebServer.xcodeproj/xcshareddata/xcschemes/GCDWebServers (iOS).xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0900"
+   LastUpgradeVersion = "0910"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"

GCDWebServer.xcodeproj/xcshareddata/xcschemes/GCDWebServers (tvOS).xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "0900"
+   LastUpgradeVersion = "0910"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"