Pair of interconnected HH neurons with synaptic delay

Just a demo of how mutually connected cells can propagate a spike
indefinitely.
Added swap files to gitignore
Network code started
Adding layers

Something messed up with CR and had to dos2unix the script.
Starting to add layers and make a synfire chain type network.
Synfire chain ish network
Synfire chain

Copied from the current state of HHNet.py, which will go on to be the
main script for the current work.
Currently the same as SFC

Now implements a Synfire chain with stable propagation