Fix about_nil gain karma

* learned that nil is an object in Ruby

[#54145613]
Fix about_nil gained karma

* Calling an undefined method on nil raises a
  NoMethodError with message "method not found"

* This is the most common error in Rails

[#54145613]
Fix about_nil gained karma

* nil object has 64 methods.

* Some returned values are representational

[#54145613]
Merge pull request #2 from bayendor/54145613_about_nil_master

Get all tests on about_nil_master to pass

[Delivers #54145613]
Fixed failing test in about_asserts.rb

* Learned that assert has a second optional
  argument that contains additional information
  to help figure why the test is failing

[#54145607]
Fixed failing test in about_asserts.rb

* helpful for debugging a failed test

* Passing boolean options to assert will pass
  or fail based on whether the boolean is true
  or false

[#54145607]
Fixed failing test in about_asserts.rb

* Gives expected value

* Sometimes a value is just a value

[#54145607]
Fixed failing test in about_asserts.rb

* Gives expected value

[#54145607]
Fixed failing test in about_asserts.rb

* Gives expected value

[#54145607]
Merge pull request #1 from bayendor/54145607_about_asserts_master

Fix about_asserts.rb

[Delivers #54145607]