Add all jnml options to pyNeuroML

[pgleeson]

Normally will just require an update here: https://github.com/NeuroML/pyNeuroML/blob/master/pyneuroml/pynml.py

• jnml LEMSFile.xml -sedml
• jnml LEMSFile.xml -neuron [-nogui] [-run] [-outputdir dir]
• jnml NMLFile.nml -svg
• jnml LEMSFile.xml -dlems
• jnml LEMSFile.xml -vertex
• jnml LEMSFile.xml -xpp
• jnml LEMSFile.xml -dnsim
• jnml LEMSFile.xml -brian(2)
• jnml LEMSFile.xml -sbml
• jnml LEMSFile.xml -matlab
• jnml LEMSFile.xml -cvode
• jnml LEMSFile.xml -nineml
• jnml LEMSFile.xml -spineml
• jnml -sbml-import SBMLFile.sbml duration dt
• jnml -sbml-import-units SBMLFile.sbml duration dt
• jnml LEMSFile.xml -vhdl neuronid
• jnml -validate NMLFile.nml
• jnml -validatev1 NMLFile.nml