Add pajv as a command line validation tool

Author: adamvoss

_data/validator-cli.yaml

@@ -1,7 +1,15 @@
 - name: ajv-cli
   license: MIT
-  url: https://github.com/jessedc/ajv-cli
+  url: 'https://github.com/jessedc/ajv-cli'
   draft:
     - 4
     - 5
-    - 6
+    - 6
+- name: Polyglottal JSON Schema Validator
+  license: MIT
+  url: 'https://github.com/json-schema-everywhere/pajv'
+  draft:
+    - 4
+    - 5
+    - 6
+  notes: can be used with YAML and many other formats besides JSON

implementations.md

@@ -105,7 +105,8 @@ Validators
 ### Command Line
 
 {% for tool in site.data.validator-cli %}
-- [{{ tool.name }}]({{ tool.url }}) - supports draft {{ tool.draft | join: ", draft " }} ({{ tool.license | join: ", " }}){% endfor %}
+- [{{ tool.name }}]({{ tool.url }}) - supports draft {{ tool.draft | join: ", draft " }} ({{ tool.license | join: ", " }}){% if tool.notes %}
+  - {{ tool.notes }} {% endif %}{% endfor %}
 
 
 Validation benchmarks