How can i figure out version of bootstrap for static implementation?

[wilnicm1]

This used to be in the readme file. Related: #707, #708, #709

1. Not enough example static implementation for new ruby users in the readme.
2. How do you figure out which version of bootstrap is installed in static version?
   i. I can look at the specific css in app/assets/stylesheets/twitter-bootstrap-static/bootstrap.css.erb but do not see where the version of boostrap that this project uses is specified.
   ii. I could also look at the gem that was installed and a similar filepath.

I have used bootstrap manually for a rails project previously.
But having trouble understanding how the static install works for this package.

Thanks for taking a look. Wanted to add this gem to gain some experience.