Add ESLint config

.eslintrc.js

@@ -0,0 +1,10 @@
+module.exports = {
+    "env": {},
+    "extends": "eslint:recommended",
+    "rules": {
+        "indent": [2, 4],
+        "linebreak-style": [2, "unix"],
+        "quotes": [2, "single"],
+        "semi": [2, "always"]
+    }
+};