Add Justify as a suite user to README.md
@@ -100,6 +100,7 @@ This suite is being used by:
* [json-schema-validator](https://github.com/daveclayton/json-schema-validator)
* [everit-org/json-schema](https://github.com/everit-org/json-schema)
* [networknt/json-schema-validator](https://github.com/networknt/json-schema-validator)
+* [Justify](https://github.com/leadpony/justify)
### JavaScript ###
