Updating to v0.5.0

Using latest NML v2beta3 based org.neuroml.*
Merge branch 'master' into development

* master:
  Update README.md
Adding option for jnml -version (or jnml -v)
Added option to export to nineml & spineml (single components only)

Updated to v0.5.1
Merge branch 'test_update_getNeuroML' into development

* test_update_getNeuroML:
  Replace subprocess.check_output with subprocess.Popen to make the script compatible with Python 2.6 Refactored the code into functions Made the code pass pylint/pyflakes/pep8
Pointing to an example that doesn't require a results subfolder to successfully run

Suggested example would give error otherwise if results/ was missing
Fixes #7
Merge branch 'master' into development

* master:
  Pointing to an example that doesn't require a results subfolder to successfully run
Replacing example with its correct location in development branch of https://github.com/NeuroML/NeuroML2

Addresses #7 also.
Added a python script that wraps around jnml