.travis.yml in link_thumbnailer-3.2.0 vs .travis.yml in link_thumbnailer-3.2.1

@@ -1,6 +1,4 @@
 bundler_args: --without development
 language: ruby
 rvm:
-  - 1.9.3
-  - 2.0.0
-  - 2.1.0
+  - 2.2.0