More documentation; an agents directory for people to write there agents in, and an associated arena

* c-agents:
  Created arenas - a way of playing off a predefined set of bots without reconfiguring simulate.py.
  split off c agents into cAgent.py. created a script to churn out a python module for an external agent.

split off c agents into cAgent.py. created a script to churn out a python module for an external agent.

Replaced slow pexpect with subprocess.popen which is fast. Implemented Results() in externAgent, this makes c_frenchie work (towards #11 - now all sample bots work). Updated technicalites document and sample agents to be consistent with actual supervisor code.