Updating examples & Synapses.xml from main repo
Removing error about: No internal variable is linked to the exposure: iDensity...
Incorporating changes from main nml2 repo for gap junctions

Updated to v1.4.1
Adding check on version & correct reporting of version string
Using latest nml2 comp type defs
Updating examples & comp type defs to latest from nml2 repo
Merge branch 'development' into experimental

* development:
  Latets nml2 schema
  Latest examples from main nml2 repo
  Updating to latest schema & comp type defs from main nml2 repo
Updating comp type defs and example from nml2 repo
Merge branch 'development' into experimental

* development:
  Adds latest comp type defns from nml2 repo
  Adding plugin to allow creation of a JAR which includes dependencies
Latest example code from main repo
Merge pull request #9 from NeuroML/experimental

Merging experimental into development: gap junctions support & poissonFiringSynapse