update travis script simulator version

Author: Andrew Lloyd

.travis.yml

@@ -9,9 +9,9 @@ env:
   global:
   - PROJECT_NAME="KeyboardHelper.xcodeproj"
   - IOS_FRAMEWORK_SCHEME="KeyboardHelper"
-  - IOS_SDK=iphonesimulator10.1
+  - IOS_SDK=iphonesimulator11.1
   matrix:
-  - DESTINATION="OS=10.1,name=iPhone 6S Plus"     SCHEME="$IOS_FRAMEWORK_SCHEME"     SDK="$IOS_SDK"     RUN_TESTS="YES"
+  - DESTINATION="OS=11.1,name=iPhone 6S Plus"     SCHEME="$IOS_FRAMEWORK_SCHEME"     SDK="$IOS_SDK"     RUN_TESTS="YES"
 
 script:
   - set -o pipefail