Routing methods dsl refactored to get rid of explicit paths parameter

[AMar4enko]

Fixes #791

[dblock]

Rubocop doesn't like eval, and for good reason. Try something like this:

%w"get pust put head delete options patch".each do |method|
  define_method method do |args, &block|
   ...
  end
end

[dblock]

Sorry for the delay, merged via d3f0c29.