Update README.md

Update README.md

Added Mockup to the README

Add files via upload

Added mockup

Update README.md

Update README.md

Added Media to README

Adding Media Files

Create media.md

Create Media

updating the content in README

QR Code functionality added to student app, Duplicating of events prevented when added using QR, general bug FIXES

Partial QR Code Functionality added

Stable with new UI on Home, perfecting navigation