Added basic usage instructions to README.md

README.md

@@ -17,3 +17,47 @@ Testing
 You will need tox (get it from pip) as python2.7
 
 $ tox
+
+Quickstart
+==========
+
+The fastest way to validate a schema against json is to use the `validate()` function provided in `json_schema_validator.shortcuts`.
+
+To import 'shortcuts' use:
+`from json_schema_validator.shortcuts import *`
+
+The function `validate()` provided by 'shortcuts' takes two positional arguments, `schema text` and `json text`. Simply pass in a valid json schema as raw string and then the json text to validate as a raw string:
+
+    from json_schema_validator.shortcuts import *
+
+    schema = open("a_schema.json", 'r')
+    json = open("some_json.json", 'r')
+
+    validate(schema.read(), json.read())
+
+`validate()` will first test the schema parameter against it's schema specification, followed by the json parameter against the schema parameter. Problems with:
+ - json syntax in either schema or json subject documents
+ - adherence to schema specifications
+ - adherence of your subject json to your provided schema
+
+
+ Will throw exceptions, otherwise this function will return `True`
+
+Checking a Schema against a Schema specification
+================================================
+
+Given the scenario that you have just created a new schema and you want to test that it is valid json/ that it adheres to your provided schema specification draft, you should use the 'Schema' class from `json_schema_validator.schema`.
+
+Instead of providing a raw string the `Schema()` constructor, `Schema()` requires a Python object (a dict).
+
+To get your raw json string into this format use the [json](https://docs.python.org/3.8/library/json.html) library's `.load()` method (or `.loads()` for a raw string json schema).
+This means any syntax mistakes in your schema's json will throw exceptions when using `json.load()/.loads()` instead of inside of **json_schema_validator** functionality. See the example:
+
+    from json_schema_validator.schema import Schema
+    import json
+
+    schema = open("a_schema.json", 'r')
+    #convert to native python object via json library
+    schema_obj = json.load(schema)
+
+    validated = Schema(schema_obj)