.travis.yml in europe-0.0.1 vs .travis.yml in europe-0.0.2

@@ -2,7 +2,9 @@
 cache: bundler
 
 rvm:
   - 1.9.3
   - 2.0.0
+  - 2.1.8
   - 2.2.0
-  - 2.2.3
+  - 2.2.3
+  - 2.2.4
\ No newline at end of file