Update README.md

Author: flaksp

README.md

@@ -1,12 +1,21 @@
 # JSON Schema TypeScript definitions
 
-This library contains TypeScript defitions for JSON Schema. It may be useful when you want to programmable generate JSON Schema.
+This package contains TypeScript definitions for JSON Schema. It may be useful in all kind of TypeScript projects that work with JSON Schema directly.
 
-Following types are exposed:
+Supported JSON Schema drafts:
 
-* `StringJsonSchema`
-* `IntegerJsonSchema`
-* `NumberJsonSchema`
-* `BooleanJsonSchema`
-* `NullJsonSchema`
-* `AnyJsonSchema` — when `type` property is not defined and type-specific properties (e.g. `maxLength` is specific to `string` type) are not defined either.
+- [2020-12](https://json-schema.org/draft/2020-12/json-schema-core.html)
+
+## Getting started
+
+Install the definitions:
+
+```bash
+npm install @fosfad/json-schema-typescript-definitions
+```
+
+Import `JsonSchema` type definition:
+
+```typescript
+import { JsonSchema } from '@fosfad/json-schema-typescript-definitions/2020-12';
+```