docs(readme): Update v6 support #51

Author: korzio

README.md

@@ -5,7 +5,7 @@
 
 Dynamic JSON Schema Validator
 
-Current package supports **JSON Schema v4** and it contains utils for validating objects against schemas.
+Current package supports **JSON Schema v6 and v4**. It contains utils to validate objects against schemas.
 This is a part of **djv** packages aimed to work with json-schema.
 
 - [djv](https://github.com/korzio/djv) validate object against schemas
@@ -192,6 +192,7 @@ npm test
 
 ## References <a name="references"></a>
 
+* [JSON-Schema Specification](http://json-schema.org/)
 * [JSON Schema Benchmark](https://github.com/ebdrup/json-schema-benchmark)
 
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