Note on node version, bump npm version

README.md

@@ -47,6 +47,8 @@ $ yarn # or npm install
 $ gulp # By default, HTML & CSS files in './src' will be watched for changes
 ```
 
+> Note: it's built using node v7.x, so please make sure your node version is up to date. Version 6+ should be fine.
+
 ### Configuring
 To make a basic email from existing templates, you only have to edit the `conf.json` file in each template.
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "responsive-html-email-signature",
-  "version": "4.0.1",
+  "version": "4.0.2",
   "description": "Responsive template for email signatures",
   "main": "index.js",
   "repository": {