Merge pull request #6828 from HabitRPG/upgrade_node

chore: Upgrade node

.nvmrc

@@ -1 +1 @@
-0.10.40
+4.3.1

.travis.yml

@@ -1,6 +1,6 @@
 language: node_js
 node_js:
-  - '0.10'
+  - '4.3.1'
 before_install:
   - "npm install -g npm@2"
   - "npm install -g gulp"

package.json

@@ -85,7 +85,7 @@
   },
   "private": true,
   "engines": {
-    "node": "^0.10.40",
+    "node": "^4.3.1",
     "npm": "^2.14.9"
   },
   "scripts": {