Logging with origami.

I was thinking that we can provide origami-lib with a logger functionality which will set up the logger for the demo. So a single method will bootstrap the python `logging` library which can then be used by demo user.

This will help us when we are deploying demos to our server too, suppose user want to check the logs for his demo the logger will store them in a file which can then be provided to demo owner.

Thoughts on this?
@deshraj @uttu357 @AvaisP @dexter1691 @vpn1997