Add some information in README

README.md

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 [![Build Status](https://travis-ci.org/GetShopTV/swagger2.svg?branch=master)](https://travis-ci.org/GetShopTV/swagger2)
 
 Swagger 2.0 data model.
+
+The original Swagger 2.0 specification is available at [http://swagger.io/specification/]().
+
+## Usage
+
+This library is inteded to be used for decoding and encoding Swagger 2.0 API specifications as well as manipulating them.
+
+Please refer to [haddock documentation](http://hackage.haskell.org/package/swagger2).
+
+Some examples can be found in [`examples/` directory](/examples).
+
+## Trying out
+
+All generated swagger specifications can be interactively viewed on [Swagger Editor](http://editor.swagger.io/).
+
+Ready-to-use specification can be served as JSON and interactive API documentation
+can be displayed using [Swagger UI](https://github.com/swagger-api/swagger-ui).
+
+Many Swagger tools, including server and client code generation for many languages, can be found on
+[Swagger's Tools and Integrations page](http://swagger.io/open-source-integrations/).
+
+## Contributing
+
+We are happy to receive bug reports, fixes, documentation enhancements, and other improvements.
+
+Please report bugs via the [github issue tracker](https://github.com/GetShopTV/swagger2/issues).
+
+/GetShopTV Team/
+
+