Update .travis.yml

Author: flipacholas

.travis.yml

@@ -6,5 +6,5 @@ language: objective-c
 # - gem install cocoapods # Since Travis is not always on latest version
 # - pod install --project-directory=Example
 script:
-- set -o pipefail && xcodebuild test -workspace Example/EncryptedDATAStack.xcworkspace -scheme EncryptedDATAStack-Example -sdk iphonesimulator10.0 ONLY_ACTIVE_ARCH=NO | xcpretty
+- set -o pipefail && xcodebuild test -workspace Example/EncryptedDATAStack.xcworkspace -scheme EncryptedDATAStack-Example -destination 'platform=iOS Simulator,name=iPhone 6' ONLY_ACTIVE_ARCH=NO | xcpretty
 - pod lib lint