docs
include server_response_time
output log in JSON format for graph generation

- not yet capturing server_time correctly
- log file is still hardcoded

… and yes, I'm hand-writing JSON. I want it to write out (streaming) as data is available rather than generating a big object in memory and I didn't feel like using Jackson for such simple JSON.
log include server-time now
bug fixes in JSON and Clojure
create a "fat jar" that is executable for the client
rename and main method implementation for executable jar