This was copied from https://github.com/dojo-toulouse/elixir-koans and modified.

• How to run:

1. open the elixir-koans repository in your editor of choice
2. open the first text file: 01_about_testing.exs and comment out all but the first test
3. modify the test to pass
4. in your terminal: cd elixir-koans/
5. run the first tests in your terminal: elixir 01_about_testing.exs
6. open the second text file: 02_about_numbers_and_booleans.exs
7. repeat steps for making the second file pass
8. repeat for the rest of the test files