Update README.md

Author: nilportugues

README.md

@@ -36,12 +36,49 @@ This library attempts to comply with [PSR-1](http://www.php-fig.org/psr/psr-1/),
 If you notice compliance oversights, please send a patch via pull request.
 
 
-## Author
+## Installation
 
-Nil Portugués Calderó
+Use [Composer](https://getcomposer.org) to install the package:
+
+```json
+$ composer require nilportugues/api-transformer
+```
+
+
+## Quality
+
+To run the PHPUnit tests at the command line, go to the tests directory and issue phpunit.
+
+This library attempts to comply with [PSR-1](http://www.php-fig.org/psr/psr-1/), [PSR-2](http://www.php-fig.org/psr/psr-2/), [PSR-4](http://www.php-fig.org/psr/psr-4/) and [PSR-7](http://www.php-fig.org/psr/psr-7/).
+
+If you notice compliance oversights, please send a patch via [Pull Request](https://github.com/nilportugues/api-transformer/pulls).
+
+
+
+## Contribute
+
+Contributions to the package are always welcome!
+
+* Report any bugs or issues you find on the [issue tracker](https://github.com/nilportugues/api-transformer/issues/new).
+* You can grab the source code at the package's [Git repository](https://github.com/nilportugues/api-transformer).
+
+
+
+## Support
+
+Get in touch with me using one of the following means:
+
+ - Emailing me at <contact@nilportugues.com>
+ - Opening an [Issue](https://github.com/nilportugues/api-transformer/issues/new)
+ - Using Gitter: [![Gitter](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/nilportugues/api-transformer?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge)
+
+
+
+## Authors
+
+* [Nil Portugués Calderó](http://nilportugues.com)
+* [The Community Contributors](https://github.com/nilportugues/api-transformer/graphs/contributors)
 
- - <contact@nilportugues.com>
- - [http://nilportugues.com](http://nilportugues.com)
 
 ## License
-The code base is licensed under the MIT license.
+The code base is licensed under the [MIT license](LICENSE).