Add example neuroml

Author: pgleeson

.gitignore

@@ -161,3 +161,4 @@ cython_debug/
 #  option (not recommended) you can uncomment the following to ignore the entire idea folder.
 .idea/
 /examples/document.specification.bson
+/examples/neuroml2/hello_world.v.dat

examples/neuroml2/LEMS_hello_world.xml

@@ -0,0 +1,27 @@
+<Lems>
+    
+    <!-- 
+
+        This LEMS file has been automatically generated using PyNeuroML v1.0.8 (libNeuroML v0.5.2)
+
+     -->
+    
+    <!-- Specify which component to run -->
+    <Target component="hello_world"/>
+
+    <!-- Include core NeuroML2 ComponentType definitions -->
+    <Include file="Cells.xml"/>
+    <Include file="Networks.xml"/>
+    <Include file="Simulation.xml"/>
+    
+    <Include file="hello_world_neuroml.net.nml"/>
+   
+    <Simulation id="hello_world" length="1000ms" step="0.1ms" target="IzNet" seed="123">  <!-- Note seed: ensures same random numbers used every run -->
+        
+        <OutputFile id="output0" fileName="hello_world.v.dat">
+            <OutputColumn id="IzhPop0[0]" quantity="IzhPop0[0]/v"/> 
+        </OutputFile>
+        
+    </Simulation>
+
+</Lems>

examples/neuroml2/hello_world_neuroml.net.nml

@@ -0,0 +1,8 @@
+<neuroml xmlns="http://www.neuroml.org/schema/neuroml2"  xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.neuroml.org/schema/neuroml2 https://raw.github.com/NeuroML/NeuroML2/development/Schemas/NeuroML2/NeuroML_v2.3.xsd" id="IzhNeuron">
+    <izhikevich2007Cell id="izh2007RS0" C="100pF" v0="-60mV" k="0.7nS_per_mV" vr="-60mV" vt="-40mV" vpeak="35mV" a="0.03per_ms" b="-2nS" c="-50.0mV" d="100pA"/>
+    <pulseGenerator id="pulseGen_0" delay="100ms" duration="800ms" amplitude="0.07 nA"/>
+    <network id="IzNet">
+        <population id="IzhPop0" component="izh2007RS0" size="1"/>
+        <explicitInput target="IzhPop0[0]" input="pulseGen_0"/>
+    </network>
+</neuroml>