Update README.md

schema/README.md

@@ -3,8 +3,14 @@
 This folder contains JSON Schemas for the NGSI-LD API.
 
 Schemas have been developed using Draft07 of JSON Schema. 
+
 https://json-schema.org/latest/json-schema-validation.html
 
-Schemas have been validated using 
+Schemas have been validated online using 
 
 https://www.jsonschemavalidator.net/
+
+and from a CLI interface using 
+
+https://ajv.js.org/
+