Add lint script to package.json

.eslintrc

@@ -0,0 +1,7 @@
+{
+  "extends": "airbnb/base",
+    "rules": {
+      "comma-dangle": 0,
+      "no-param-reassign": 0
+    }
+}

package.json

@@ -5,7 +5,8 @@
   "main": "index.js",
   "scripts": {
     "prepublish": "npm run build",
-    "build": "babel src/ -d lib/"
+    "build": "babel src/ -d lib/",
+    "lint": "eslint src/"
   },
   "author": "Henning Morud <henning@morud.org>",
   "contributors": [
@@ -38,6 +39,8 @@
   "homepage": "https://github.com/HenningM/express-ws",
   "devDependencies": {
     "babel-cli": "^6.5.1",
-    "babel-preset-es2015": "^6.5.0"
+    "babel-preset-es2015": "^6.5.0",
+    "eslint": "^1.10.3",
+    "eslint-config-airbnb": "^5.0.0"
   }
 }