.travis.yml in fastly-1.10.0 vs .travis.yml in fastly-1.11.0

@@ -1,15 +1,13 @@
 language: ruby
 script: 'bundle exec rake test:unit'
 sudo: false
 matrix:
   include:
-    - rvm: 1.9
-      gemfile: gemfiles/ruby_1.9.gemfile
-    - rvm: 2.0.0
+    - rvm: 2.1.10
       gemfile: gemfiles/HEAD.gemfile
-    - rvm: 2.1.9
+    - rvm: 2.2.7
       gemfile: gemfiles/HEAD.gemfile
-    - rvm: 2.2.5
+    - rvm: 2.3.4
       gemfile: gemfiles/HEAD.gemfile
-    - rvm: 2.3.1
+    - rvm: 2.4.1
       gemfile: gemfiles/HEAD.gemfile