Make a video/infographic to showcase Oppia's features

In as much detail as possible, please describe what you would like to see.

It would be nice to make some new videos/infographics to demonstrate the 
various features of Oppia -- especially those that were added (feedback 
handling, better editor UI, etc.) since the video for the codesite homepage was 
made. Note that the aforementioned video was also recorded at too low a 
resolution; we should look into fixing this.

Original issue reported on code.google.com by s...@google.com on 24 Jul 2014 at 8:18

Merged into: #279

VictoriaRoux / oppia

Make a video/infographic to showcase Oppia's features #280