[Video] Do we need to introduce Elixir from the bare basics?

In the `learn-elixir` README we give installation instructions and the links to some (awesome) videos and a link to elixirschool.com to get the user acquainted with _what_ Elixir is.

Do we need to have an introduction to what Elixir is in our own videos, or should we just suggest that the user watches the videos/reads the material linked in the README? I suppose it depends on whether we want these videos to be able to completely stand on their own, or to be an accompaniment to the README of the `learn-elixir` repo.

I can see arguments for both so am keen for input!