Add info about website-scraper-phantom to Readme

Author: s0ph1e

README.md

@@ -15,7 +15,7 @@ Download website to a local directory (including all css, images, js, etc.)
 
 You can try it in [demo app](https://scraper.nepochataya.pp.ua/) ([source](https://github.com/s0ph1e/web-scraper))
 
-**Note:** dynamic websites (where content is loaded by js) may be saved not correctly because `website-scraper` doesn't execute js, it only parses http responses for html and css files.
+**Note:** by default dynamic websites (where content is loaded by js) may be saved not correctly because `website-scraper` doesn't execute js, it only parses http responses for html and css files. If you need to download dynamic website take a look on [website-scraper-phantom](https://github.com/s0ph1e/node-website-scraper-phantom).
 
 
 ## Installation