add newer ruby versions to .travis.yml

svenfuchs · svenfuchs · commit cf65aaad0109 · 2017-04-25T18:57:16.000+02:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,6 +1,10 @@
+sudo: false
+dist: trusty
 language: ruby
+
 rvm:
-  - 1.8.7
-  - 1.9.2
   - 1.9.3
-  - ree
+  - 2.1
+  - 2.2
+  - 2.3
+  - 2.4
