You can clone with
HTTPS or Subversion.
Clarified the purpose of 'Looks like a duck, quacks like a duck'.
Added a comment after each assignment, which helps to prove that the object changed its class.
Corrected the spelling of Symbol.
Added inheritance file and one example of simple inheritance.
a bit of cleanup in classes
Merge branch 'master' of git://github.com/ChrisMissal/learn-ruby
Fixed typos and added new "unless" example.