Simultaneous connections are cut short

[arempe93]

When a client connects before another client is processed, the connection of the first is cut without parsing the JSON. This can be replicated by

# Terminal 1
$ ruby run_server.rb

# Terminal 2
$ telnet localhost 8000 < test.json | telnet localhost 8000 < test.json

[celic]

Whenever a new thread is spawned, instantiate all the globals to 0 or something.