Default settings at start-up

[laurieneedham]

For a newly created sessions, the default sessions should be as follows:

• width: 1920
• height: 1080
• fps: 200
• duration: 10 secs
• gain (per cam and all): 0

Reuben - This is just a follow up from our previous discussion about this so we have it noted somewhere.

[laurieneedham]

Fixed in #15