.travis.yml in simctl-1.5.1 vs .travis.yml in simctl-1.5.2

@@ -1,7 +1,10 @@
 language: objective-c
 osx_image: xcode7.3
 before_script:
   - export LANG=en_US.UTF-8
 install: bundle
+env:
+  - CUSTOM_DEVICE_SET_PATH=true
+  - CUSTOM_DEVICE_SET_PATH=false
 script:
   - bundle exec rake