Make the package only support node >= 6 for now.

robertvansteen · robertvansteen · commit ca7941c3b103 · 2017-02-26T12:55:15.000+01:00
diff --git a/.travis.yml b/.travis.yml
@@ -1,7 +1,5 @@
 language: node_js
 node_js:
-  - "4"
-  - "5"
   - "6"
   - "7"
 
diff --git a/package.json b/package.json
@@ -6,6 +6,9 @@
   "repository": "https://github.com/scrnhq/react-snapshot-server",
   "author": "Robert van Steen",
   "license": "MIT",
+  "engines": {
+    "node": ">=6"
+  },
   "bin": {
     "react-snapshot-server": "./bin/cli.js"
   },
