add contribution file and updated README

CONTRIBUTING.md

@@ -0,0 +1,32 @@
+# Contributing
+
+Contributions are **welcome** and will be fully **credited**.
+
+We accept contributions via Pull Requests on [Github](https://github.com/2amigos/yii2-usuario).
+
+
+## Pull Requests
+
+- **[PSR-2 Coding Standard](https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-2-coding-style-guide.md)** - The easiest way to apply the conventions is to install [PHP Code Sniffer](http://pear.php.net/package/PHP_CodeSniffer).
+
+- **Add tests!** - Your new features won't be accepted if it doesn't have tests.
+
+- **Document any change in behaviour** - Make sure the `README.md` and any other relevant documentation are kept up-to-date.
+
+- **Consider our release cycle** - We try to follow [SemVer v2.0.0](http://semver.org/). Randomly breaking public APIs is not an option.
+
+- **Create feature branches** - Don't ask us to pull from your master branch.
+
+- **One pull request per feature** - If you want to do more than one thing, send multiple pull requests.
+
+- **Send coherent history** - Make sure each individual commit in your pull request is meaningful. If you had to make multiple intermediate commits while developing, please squash them before submitting.
+
+
+## Running Tests
+
+``` bash
+$ ./vendor/bin/phpunit
+```
+
+
+**Happy coding**!

README.md

@@ -13,10 +13,8 @@ Yii2 Usuario Extension
 Yii 2 usuario is a highly customizable and extensible user management, RBAC management, authentication, 
 and authorization Yii2 module extension. 
 
-It works extensively with Yii's Container making it really easy to modify anything within its core. Whether is 
+It works extensively with Yii's Container making it really easy to override absolutely anything within its core. The 
-
+module is built to work out of the box with some minor config tweaks and it comes with the following features: 
-
-This module is made in order to work out of the box with the following features: 
  
 - Backend user/profile/account management
 - Backend RBAC management 
@@ -24,5 +22,23 @@ This module is made in order to work out of the box with the following features:
 - Login via social network process
 - Password recovery process
 
+We considered that RBAC was essential to be included into any user management module, even if you simply use one user 
+with `admin` role, its much better to actually work with RBAC just in case your application scales in the future.
+
+## Documentation 
+
+You can read the latest docs on [http://yii2-usuario.readthedocs.io/en/latest/](http://yii2-usuario.readthedocs.io/en/latest/)
+
+
+## Need Help? 
+
+If you have issues, please use the Gitter room of this repository [https://gitter.im/2amigos/yii2-usuario](https://gitter.im/2amigos/yii2-usuario). 
+Please, remember that we may not be online all the time. We expect that we can build a community around the users of 
+ this module 
+
+## Contributing 
+
+Please, read our [CONTRIBUTION guidelines](CONTRIBUTING.md). 
+ 
 
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