travis: test node v4.1

TooTallNate · TooTallNate · commit c0b64413fec4 · 2015-09-18T14:26:43.000-07:00
Needed for nodejs/node#2912. See #238 and #239.
diff --git a/.travis.yml b/.travis.yml
@@ -16,7 +16,7 @@ node_js:
   - "0.12"
   - "2"
   - "3.2"
-  - "4"
+  - "4.1"
 
 install:
   - PATH="`npm bin`:`npm bin -g`:$PATH"
