LICENSE link in readme; SCHEMA.md

Author: epoberezkin

README.md

@@ -58,3 +58,8 @@ See [Schema](https://github.com/JSONScript/jsonscript/blob/master/SCHEMA.md) for
 ## Implementation
 
 JSONScript interpreter for node-js: [jsonscript-js](https://github.com/epoberezkin/jsonscript-js)
+
+
+## License
+
+[MIT](https://github.com/JSONScript/jsonscript/blob/master/LICENSE)

SCHEMA.md

@@ -1,9 +1,11 @@
 # JSONScript Schema
 
-[JSCONScript schema](http://www.json-script.com/schema/schema.json#) schema that does not validate keywords in instructions.
+JSONScript uses JSON-Schema standard both for the validation schemas and for the schema that defines evauation process.
 
-[JSONScript strict schema](http://www.json-script.com/schema/schema_strict.json#) schema that validates scalar keywords in instructions.
+[JSONScript schema](http://www.json-script.com/schema/schema.json#) the schema that does not validate scalar keywords in instructions (keyword values can be scripts and have to be validated when the script is evaluated).
 
-[JSONScript evaluation schema](http://www.json-script.com/schema/evaluate.json#) this schema contains custom schema keywords and can be used by implementations to evaluate scripts.
+[JSONScript strict schema](http://www.json-script.com/schema/schema_strict.json#) the schema that validates scalar keywords in instructions.
 
-[Instruction definition schema](http://www.json-script.com/schema/instruction.json#) the schema for instruction defnitions.
+[JSONScript evaluation schema](http://www.json-script.com/schema/evaluate.json#) this schema defines evalution process. It can be used by implementations to evaluate scripts. It contains non-standard keywords.
+
+[Instruction definition schema](http://www.json-script.com/schema/instruction.json#) the schema for instruction defnitions. The definitions of both standard and user-defined instructions should be valid according to this schema.