Remove redundant let.
Merge pull request #26 from philipa/tweak-async-reponse

Remove redundant let.
remove hook related code
move timer related code to a seperate namespace
update test to include HTTP PATCH
add HTTP PATCH method for the client
:test profile is automatically used for lein test. fix #25
send!: fix default for close-after-send? to match documentation
Merge pull request #27 from philipa/phil1

send!: fix default for close-after-send? to match documentation
clear hook code
fix readme
Merge remote-tracking branch 'upstream/protocol-api' into binary-websocket
And implement the binary frame for websocket.