Initial ideas weight override
Initial impl of weight override option
Ignoring some generated files
Merge branch 'master' into test_weights_c302

* master:
  More tests on jnml generated code
  More dteailed tests
  Minor change to travis.yml
  Adding initial test scripts based on OSB testing framework

Conflicts:
	.gitignore
Updates cmd line options including:  -connnumberoverride=["I1L-I3":2.5] -connnumberscaling=["PVCR-DB5":5]

See c302_A_Weights.py for example
Adding independent parameters for electrical syns in parameters_A

Gap junctions can be turned off with elec_syn_gbase = 0
Also adding comments on params used to generated files
Merge pull request #16 from openworm/test_weights_c302

Implements custom weight setting in c302