Inculde demo site and getting started guide

[Josh-BI-UK]

Is your feature request related to a problem? Please describe.

1. It would be helpful to have some instructions on how to install the theme.
2. I'm unable to find the link to the demo site.
3. It would be helpful to have a full list of features the theme offers, to support compare and contrast with other theme options.

Thank you in advance.

Josh