updated node.js info in README.md
updated node.js info in README.md

atomiqio/json-schema-test-suite,json-schema-org/JSON-Schema-Test-Suite,json-schema/JSON-Schema-Test-Suite,atomiqio/json-schema-test-suite,WHenderson/ex-json-schema,WHenderson/ex-json-schema,epoberezkin/JSON-Schema-Test-Suite,Relequestual/JSON-Schema-Test-Suite,moander/JSON-Schema-Test-Suite,epoberezkin/JSON-Schema-Test-Suite,neomadara/JSON-Schema-Test-Suite