DMB Video Rework

Following the comments from the lecturer I make changes to the Video by creating a clear opening to introduce the video and change the handwritten scene to a typing interface type. But still thinking of how to do "unintended" use of the app in the video shall look into it on a later date though.

Still haven't add all this scene into premier hopefully the whole video will still flow smoothly in expression. 

Opening title

Typing Interface