Took the first step towards enlightenment

* pivotal tracker story id is [#75411394]
* learned that assert test will pass if it is passed a true value, and
* fail otherwise
fixed all errors in about_asserts.rb

* pivotal tracker id: [#75411394]
* learned another way of formatting the assert test:
you can define an expected_value, and an actual_value,
then run assert actual_value, expected_value