.travis.yml in geokit-1.7.1 vs .travis.yml in geokit-1.8.0

@@ -3,9 +3,10 @@
   - ree
   - 1.8.7
   - 1.9.2
   - 1.9.3
   - 2.0.0
+  - 2.1.0
 script: "bundle exec rake coverage"
 before_install:
   - gem install bundler
 notifications:
   email: