Update Travis Configuration

Author: freak4pc

.swift-version

@@ -1,17 +1,18 @@
-osx_image: xcode9.3
+osx_image: xcode10
 language: objective-c
 sudo: required
 env:
   global:
     - PROJECT="RxKeyboard.xcodeproj"
     - SCHEME="RxKeyboard-Package"
-    - IOS_SDK="iphonesimulator11.3"
-    - MACOS_SDK="macosx10.13"
-    - TVOS_SDK="appletvsimulator11.3"
-    - WATCHOS_SDK="watchsimulator4.0"
+    - IOS_SDK="iphonesimulator"
+    - MACOS_SDK="macosx10.14"
+    - TVOS_SDK="appletvsimulator12.0"
+    - WATCHOS_SDK="watchsimulator5.0"
     - FRAMEWORK="RxKeyboard"
   matrix:
-    - SDK="$IOS_SDK"      TEST=0  DESTINATION="platform=iOS Simulator,name=iPhone 8,OS=11.3"
+    - SDK="$IOS_SDK"      TEST=0  SWIFT_VERSION=4.0 DESTINATION="platform=iOS Simulator,name=iPhone 8"
+    - SDK="$IOS_SDK"      TEST=0  SWIFT_VERSION=4.2 DESTINATION="platform=iOS Simulator,name=iPhone 8"
 
 install:
   - eval "$(curl -sL https://gist.githubusercontent.com/kylef/5c0475ff02b7c7671d2a/raw/9f442512a46d7a2af7b850d65a7e9bd31edfb09b/swiftenv-install.sh)"
@@ -24,7 +25,7 @@ before_script:
 
 script:
   - if [ $TEST == 1 ]; then
-      xcodebuild clean build test
+      xcodebuild clean SWIFT_VERSION=${SWIFT_VERSION} build test
         -project "$PROJECT"
         -scheme "$SCHEME"
         -sdk "$SDK"
@@ -33,7 +34,7 @@ script:
         -enableCodeCoverage YES
         CODE_SIGN_IDENTITY="" CODE_SIGNING_REQUIRED=NO | xcpretty -c;
     else
-      xcodebuild clean build
+      xcodebuild clean SWIFT_VERSION=${SWIFT_VERSION} build
         -project "$PROJECT"
         -scheme "$SCHEME"
         -sdk "$SDK"
@@ -42,7 +43,7 @@ script:
         CODE_SIGN_IDENTITY="" CODE_SIGNING_REQUIRED=NO | xcpretty -c;
     fi
   - bundle exec pod repo update
-  - bundle exec pod lib lint --verbose --allow-warnings --fail-fast
+  - bundle exec pod lib lint --swift-version=${SWIFT_VERSION} --verbose --allow-warnings --fail-fast
 
 before_deploy:
   - bundle exec swiftproj generate-xcconfig --podspec RxKeyboard.podspec

.travis.yml

@@ -1,4 +1,4 @@
-// swift-tools-version:4.2
+// swift-tools-version:4.0
 
 import PackageDescription