Change max_line_length to 120

 Add .eslintrc file
 Update README.md

Author: ph1p

.editorconfig

@@ -8,4 +8,4 @@ trim_trailing_whitespace = true
 insert_final_newline = true
 end_of_line = lf
 # editorconfig-tools is unable to ignore longs strings or urls
-max_line_length = null
+max_line_length = 120

.eslintrc

@@ -0,0 +1,15 @@
+{
+  "extends": "airbnb",
+  "rules": {
+    "comma-dangle": [
+      "error",
+      {
+        "arrays": "never",
+        "objects": "never",
+        "imports": "never",
+        "exports": "never",
+        "functions": "ignore"
+      }
+    ]
+  }
+}