Merge branch 'refactor/clarify-response' into 'master'

README.md

bin/nickserver

lib/nickserver/hkp/key_info.rb

lib/nickserver/hkp/source.rb

lib/nickserver/key_response.rb

lib/nickserver/wkd/source.rb

test/functional/bin_test.rb

test/functional/sample_test.rb

test/integration/dispatcher_test.rb

test/integration/hkp_test.rb

test/integration/nickserver_test.rb

test/remote/hkp_source_test.rb

test/remote/nicknym_source_test.rb

test/remote/wkd_source_test.rb