Upgrade node to latest LTS.

Author: steveklabnik

.travis.yml

@@ -7,7 +7,7 @@ cache:
     - node_modules
 
 before_install:
-  - nvm install 0.12
+  - nvm install 4.6.0
   - export PATH=/usr/local/phantomjs-2.0.0/bin:$PATH
   - "npm config set spin false"
   - "npm install -g npm@^2"

package.json

@@ -16,7 +16,7 @@
   },
   "repository": "",
   "engines": {
-    "node": ">= 0.10.0"
+    "node": "= 4.6.0"
   },
   "author": "",
   "license": "MIT",