Update .travis.yml

Xcode from 8 to 9
added iPhone X

.travis.yml

@@ -1,5 +1,5 @@
 language: objective-c
-osx_image: xcode8.3
+osx_image: xcode9.3
 branches:
   only:
     - master
@@ -11,20 +11,12 @@ env:
   - WORKSPACE=EasyDi.xcworkspace
   - IOS_FRAMEWORK_SCHEME="EasyDi-iOS"
   - MACOS_FRAMEWORK_SCHEME="EasyDi-macOS"
-#  - TVOS_FRAMEWORK_SCHEME="EasyDi-tvOS"
-#  - WATCHOS_FRAMEWORK_SCHEME="EasyDi-watchOS"
   - EXAMPLE_SCHEME="iOS Example"
   matrix:
-    #- DESTINATION="OS=3.2,   name=Apple Watch - 42mm" SCHEME="$WATCHOS_FRAMEWORK_SCHEME"  RUN_TESTS="NO"  BUILD_EXAMPLE="NO"  POD_LINT="NO"
-    #- DESTINATION="OS=2.0,   name=Apple Watch - 42mm" SCHEME="$WATCHOS_FRAMEWORK_SCHEME"  RUN_TESTS="NO"  BUILD_EXAMPLE="NO"  POD_LINT="NO"
-
     - DESTINATION="OS=10.3.1,name=iPhone 7 Plus"      SCHEME="$IOS_FRAMEWORK_SCHEME"      RUN_TESTS="YES" BUILD_EXAMPLE="YES" POD_LINT="YES"
     - DESTINATION="OS=9.0,name=iPhone 6"           SCHEME="$IOS_FRAMEWORK_SCHEME"      RUN_TESTS="YES" BUILD_EXAMPLE="YES" POD_LINT="NO"
     - DESTINATION="OS=8.1,name=iPhone 4S"          SCHEME="$IOS_FRAMEWORK_SCHEME"      RUN_TESTS="YES" BUILD_EXAMPLE="YES" POD_LINT="NO"
-
-    #- DESTINATION="OS=10.2,  name=Apple TV 1080p"     SCHEME="$TVOS_FRAMEWORK_SCHEME"     RUN_TESTS="YES" BUILD_EXAMPLE="NO"  POD_LINT="NO"
-    #- DESTINATION="OS=9.0,   name=Apple TV 1080p"     SCHEME="$TVOS_FRAMEWORK_SCHEME"     RUN_TESTS="YES" BUILD_EXAMPLE="NO"  POD_LINT="NO"
-
+    - DESTINATION="OS=11.3,name=iPhone X"          SCHEME="$IOS_FRAMEWORK_SCHEME"      RUN_TESTS="YES" BUILD_EXAMPLE="YES" POD_LINT="NO"    
     - DESTINATION="arch=x86_64"                       SCHEME="$MACOS_FRAMEWORK_SCHEME"    RUN_TESTS="YES" BUILD_EXAMPLE="NO"  POD_LINT="NO"
 before_install:
   - gem install cocoapods --pre --no-rdoc --no-ri --no-document --quiet