remove unused let command
Eliminate duplication by using `shared examples`.
Merge branch 'exercise5_6_1'
Filled in the code in Listing 5.36
fix: add calling `it_should_behave_like`
Replaced the `full_title` test helper with a simple `include`
Wrote tests for the `full_title` helper
Merge branch 'exercise5_6_1' into exercise5_6_3
Merge branch 'exercise5_6_2' into exercise5_6_3
Eliminate a `full_title` method call
fix: `spec_helper` path
Merge pull request #3 from kitak/exercise5_6_3

Exercise5 6 3