Fixed travis config

Author: mtet88

Diff for: .travis.yml

@@ -5,7 +5,7 @@ env:
   matrix:
     - DESTINATION="platform=iOS Simulator,name=iPhone 5s,OS=9.3"
     - DESTINATION="platform=iOS Simulator,name=iPhone 7,OS=10.1"
-    - DESTINATION="platform=iOS Simulator,name=iPhone X,OS=11.0"
+    - DESTINATION="platform=iOS Simulator,name=iPhone X,OS=11.1"
 
 podfile: Example/Podfile
 before_install:

Diff for: Example/Example.xcodeproj/project.pbxproj

@@ -391,7 +391,6 @@
 				PRODUCT_BUNDLE_IDENTIFIER = de.seiffert.hans.swift.containercontroller.example;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE = "35c65a7a-c0c5-4add-ae0f-c5b38f3809d0";
-				SWIFT_VERSION = 4.2;
 			};
 			name = Debug;
 		};
@@ -406,7 +405,6 @@
 				OTHER_SWIFT_FLAGS = "$(inherited) -D RELEASE";
 				PRODUCT_BUNDLE_IDENTIFIER = de.seiffert.hans.swift.containercontroller.example;
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 4.2;
 			};
 			name = Release;
 		};