I know how to view a text file, or even navigate a directory of them. But as forsaken said, a GitHub file browser is often not the best UI for viewing documentation, especially when you're already in a browser.
What's better, the docs for Backbone.Marionette[0], or Backbone[1]?
[0]: https://github.com/marionettejs/backbone.marionette/tree/mas... [1]: http://backbonejs.org/