.travis.yml in druid-ts-1.2.5 vs .travis.yml in druid-ts-1.2.6

- old
+ new

@@ -1,10 +1,13 @@
 sudo: required
 dist: trusty
 rvm:
   - 2.2.5
+  - 2.2.7
+  - 2.3.4
   - 2.3.1
+  - 2.4.1
 cache: bundler
 before_script:
   - export CHROME_BIN=/usr/bin/google-chrome
   - "export DISPLAY=:99.0"
   - "sh -e /etc/init.d/xvfb start"
@@ -17,6 +20,7 @@
   - unzip chromedriver_linux64.zip
   - chmod +x chromedriver
   - sudo mv chromedriver /usr/local/bin
 script: bundle exec rake $RAKE_TASK
 env:
+  - RAKE_TASK=spec
   - RAKE_TASK=features:watir