[Content:add] Rapidscan tool

Author: sundowndev

README.md

@@ -107,6 +107,7 @@ Information Gathering tools allows you to collect host metadata about services a
 | [Infoga](https://github.com/m4ll0k/Infoga)      | **Python** | `Linux/Windows/macOS` | Email Information Gathering. |
 | [KnockMail](https://github.com/4w4k3/KnockMail)      | **Python** | `Linux/Windows/macOS` | Check if email address exists. |
 | [Photon](https://github.com/s0md3v/Photon)      | **Python** | `Linux/Windows/macOS` | Crawler which is incredibly fast and extracts urls, emails, files, website accounts and much more. |
+| [Rapidscan](https://github.com/skavngr/rapidscan)      | **Python** | `Linux/Windows/macOS` | The Multi-Tool Web Vulnerability Scanner. |
 
 #### :lock: Password Attacks