update Travis config

pirxpilot · pirxpilot · commit 590c0e1baf69 · 2015-10-25T10:36:44.000-04:00
run test on the same versions on which postcss is tested - stable (4.x)
and legacy (0.12)
diff --git a/.travis.yml b/.travis.yml
@@ -1,5 +1,5 @@
 sudo: false
 language: node_js
 node_js:
-  - iojs
+  - "stable"
   - "0.12"
