Merge pull request #54 from yahoo/mridgway-patch-1

Add 0.12 and iojs to required tests; Add 0.13 as optional

Author: redonkulus

.travis.yml

@@ -1,6 +1,11 @@
 language: node_js
+matrix:
+  allow_failures:
+    - node_js: "0.13"
 node_js:
-  - "0.11"
+  - "iojs"
+  - "0.13"
+  - "0.12"
   - "0.10"
 after_success:
   - "npm run cover"