build: run Travis against Linux and OS X

strawbrary · strawbrary · commit 93cbe804b0b2 · 2016-04-27T13:17:03.000-07:00
diff --git a/.travis.yml b/.travis.yml
@@ -5,6 +5,10 @@ node_js:
   - 4
   - stable
 
+os:
+  - linux
+  - osx
+
 install:
   - npm -g install npm@3
   - npm install
