Prerequisites:
1. Erlang R13B4 or higher

Getting started:

1. Compile
$./rebar compile
==> emergence (compile)
Compiled src/emergence_sup.erl
Compiled src/emergence_app.erl
Compiled src/demo.erl
Compiled src/hello_world.erl
Compiled src/pop.erl
Compiled src/string_metrics.erl
Compiled src/mochinum.erl
Compiled src/websocket_server.erl
Compiled src/mochijson2.erl

2. Open the html file scratch/scrat4.html in your browser (NB This only works in Chrome at the moment)

3. Start the demo in the Erlang shell:
$erl -pa ebin
Erlang R13B04 (erts-5.7.5) [source] [smp:2:2] [rq:2] [async-threads:0] [hipe] [kernel-poll:false]

Eshell V5.7.5  (abort with ^G)
1> demo:start().
Handshake received: [{"Origin","null"},
                     {"Host","localhost:1234"},
                     {"Connection","Upgrade"},
                     {"Upgrade","WebSocket"}]
{ok,<0.35.0>}
2> 

4. Restart the evolution:

2> demo:stop(). 
{'EXIT',{normal,{gen_server,call,[pop,stop]}}}
3> demo:start().
{ok,<0.5479.0>}
Handshake received: [{"Origin","null"},
                     {"Host","localhost:1234"},
                     {"Connection","Upgrade"},
                     {"Upgrade","WebSocket"}]
4> 

4. You can click the wifi symbol in the top left to disconnect/connect to a running server