Added web app preview

Author: TiagoMMDavid

README.md

@@ -8,7 +8,7 @@ Each project can hold the information of its name, description and the issues as
 ## Table of Contents
 - [Functionalities](#functionalities)
 - [Preview](#preview)
-- [Documentation](#requirements)
+- [Documentation](#documentation)
 - [Credits](#credits)
 
 ## Functionalities
@@ -28,6 +28,7 @@ The following functionalities are exposed:
 
 ## Preview
 
+https://user-images.githubusercontent.com/44146594/130253147-213a1236-1608-40ea-96e2-89e725864982.mp4
 
 ## Documentation
 - Server Application
@@ -43,4 +44,4 @@ This application was developed for the Web Application Development class (6th se
 Developed by:
 * [TiagoMMDavid](https://github.com/TiagoMMDavid)
 * [PTKickass](https://github.com/PTKickass)
-* [dvsshadow](https://github.com/dvsshadow)
+* [dvsshadow](https://github.com/dvsshadow)