Update information on VariO (#2103)

* Add more contact information to VariO
* Add license
* Add publications
* Update registry_schema.json
* Update validate-metadata.py
* Update vario.md

---------

Co-authored-by: Nico Matentzoglu <[email protected]>

Author: cthoyt

Diff for: ontology/vario.md

@@ -7,15 +7,27 @@ build:
   source_url: http://variationontology.org/vario_download/vario.obo
 contact:
   email: [email protected]
+  github: maunov
   label: Mauno Vihinen
+  orcid: 0000-0002-9614-7976
 description: Variation Ontology, VariO, is an ontology for standardized, systematic description of effects, consequences and mechanisms of variations.
 domain: biological systems
 homepage: http://variationontology.org
+license:
+  label: CC BY 4.0
+  url: https://creativecommons.org/licenses/by/4.0/
 preferredPrefix: VariO
 products:
 - id: vario.owl
+  title: VariO main release in OWL
 - id: vario.obo
+  title: VariO in OBO format
+publications:
+- id: https://www.ncbi.nlm.nih.gov/pubmed/24162187
+  title: Variation Ontology for annotation of variation effects and mechanisms
+- id: https://www.ncbi.nlm.nih.gov/pubmed/24533660
+  title: 'Variation ontology: annotator guide'
+- id: https://www.ncbi.nlm.nih.gov/pubmed/25616435
+  title: Types and effects of protein variations
 activity_status: orphaned
 ---
-
-Variation Ontology, VariO, is an ontology for standardized, systematic description of effects, consequences and mechanisms of variations.