Use #[2] instead of #last to get a response body
Simplify the X-Cascase => pass check
Remove the check on the methods param of Matcher#initialize
Clean up specs
Use Hash#key? instead of Hash#has_key?
Simplify specs
Bundle update
Add Rubocop configuration
Introduce Match::Ok and Match::Fail
Replace undescriptive variable name
Add flay, flog and reek to the Gemfile