Update ci testing scheme

.travis.yml

@@ -4,5 +4,5 @@ before_install:
 - gem install xcpretty
 script:
 - set -o pipefail
-- xcodebuild -project Alamofire.xcodeproj -scheme Alamofire test -sdk iphonesimulator ONLY_ACTIVE_ARCH=NO | xcpretty -c
+- xcodebuild -project Alamofire.xcodeproj -scheme "Alamofire iOS" test -sdk iphonesimulator ONLY_ACTIVE_ARCH=NO | xcpretty -c
 - xcodebuild -project "iOS Example.xcodeproj" -scheme "iOS Example" build -sdk iphonesimulator ONLY_ACTIVE_ARCH=YES | xcpretty -c