.travis.yml in chunky_png-1.3.3 vs .travis.yml in chunky_png-1.3.4

@@ -1,16 +1,19 @@
 language: ruby
 script: bundle exec rake
+sudo: false
+
 rvm:
-  - 1.8.7
-  - 1.9.3
-  - 2.0.0
-  - 2.1.0
-  - ruby-head
-  - ree
-  - rbx
-  - jruby-18mode
-  - jruby-19mode
+- "1.8"
+- "1.9"
+- "2.0"
+- "2.1"
+- "2.2"
+- ruby-head
+- rbx
+- jruby-18mode
+- jruby-19mode
+
 matrix:
   allow_failures:
-    - rvm: rbx
-    - rvm: ruby-head
+  - rvm: rbx
+  - rvm: ruby-head