Removed comment
Believed to be working with ring buffer scaling a la Michael enabled, as
well as conductance scaling (by 1024), including for STDP (untested with
cond).  Saturation is also enabled, as is a count.
Updated neuron models to allow conductance input to be pre-calculated
Add some clipping to avoid numerical errors
Change the default spike rate to about 30
Updated the defaults
Merge branch 'master' into ring_buffer_scaling

Conflicts:
	spynnaker/pyNN/spinnaker.py
little fixes to get it to be mergable
Merge pull request #11 from SpiNNakerManchester/ring_buffer_scaling

Ring buffer scaling into master (having checked the code via vabenchmark, synfire chain, and a few of the interation tests