Merge pull request #803 from NeurodataWithoutBorders/schema_version

make NWB schema version 2.0.0

Author: ajtritt

src/pynwb/data/nwb.namespace.yaml

@@ -24,4 +24,4 @@ namespaces:
   - source: nwb.ogen.yaml
   - source: nwb.ophys.yaml
   - source: nwb.retinotopy.yaml
-  version: 2.0.0b
+  version: 2.0.0