def load_reporter_class(reporter_name)
      HamlLint::Reporter.const_get("#{reporter_name}Reporter")
    rescue NameError
      raise HamlLint::Exceptions::InvalidCLIOption,
            "#{reporter_name}Reporter does not exist"
    end
def load_reporter_class(reporter_name)
      HamlLint::Reporter.const_get("#{reporter_name}Reporter")
    rescue NameError
      raise HamlLint::Exceptions::InvalidCLIOption,
            "#{reporter_name}Reporter does not exist"
    end
Returns the class of the specified Reporter.

 @param reporter_name [String]
 @raise [HamlLint::Exceptions::InvalidCLIOption] if reporter doesn't exist
 @return [Class]