add app screenshot to readme

Author: WDverse

README.md

@@ -14,7 +14,8 @@ N/A
 To use this webpage, you can view the current date in the webpage header. To add a new project, read the Instructions and click on the "Add Project" button under the Instructions Card. A modal containing a form pops up on click. Complete the form and click on the "Add Project" button in the modal. Click "Cancel" if you want to exit the modal. On clicking the "Add Porject" button, the project information is displayed on the webpage and stored in the browser's local storage. Projects with a light-red backgrounds are past due while projects with light-yellow are due on the current date. To delete a project, click on the "X" button to the right of each project and this will remove the project from the webpage as well as the browser's local storage. 
 
 The following image shows the web application's appearance and functionality:
-![The Workday Scheduler webpage includes a header image, nine timeblocks shwoing the standard business hours (9am to 5pm) at the middle of the page, and blue save buttons to the right of each timeblock.](./assets/images/screenshot.png)
+
+![The Workday Scheduler webpage includes a header image, nine timeblocks shwoing the standard business hours (9am to 5pm) at the middle of the page, and blue save buttons to the right of each timeblock.](./assets/images/screenshot.gif)
 
 ## Credits