Update documentation

.github/CONTRIBUTING.md

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+# Contributing
+
+Please note the following guidelines before submitting pull requests:
+
+- Use the [PSR-2 coding style](https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-2-coding-style-guide.md)
+- Always create pull requests to the *develop* branch

.github/ISSUE_TEMPLATE.md

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+### What did you do?
+
+### What did you expect to happen?
+
+### What actually happened?
+
+### What versions of PHP, Lumen and this module are you using?
+
+Please include code that reproduces the issue. The best reproductions are self-contained scripts with minimal dependencies.
+
+```php
+code goes here
+```

.github/PULL_REQUEST_TEMPLATE.md

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+(Please read the [guidelines](.github/CONTRIBUTING.md) before creating PRs.)
+
+Fixes #.
+
+Changes proposed in this pull request:
+ * 
+ * 
+ * 

.gitignore

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+.idea
 /vendor/

README.md

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-# lumen-search
-Search module for the Lumen PHP framework.
+# Lumen Search
+
+[![Code Climate](https://codeclimate.com/github/nordsoftware/lumen-search/badges/gpa.svg)](https://codeclimate.com/github/nordsoftware/lumen-search)
+[![Latest Stable Version](https://poser.pugx.org/nordsoftware/lumen-search/version)](https://packagist.org/packages/nordsoftware/lumen-search)
+[![Total Downloads](https://poser.pugx.org/nordsoftware/lumen-search/downloads)](https://packagist.org/packages/nordsoftware/lumen-search)
+[![License](https://poser.pugx.org/nordsoftware/lumen-search/license)](https://packagist.org/packages/nordsoftware/lumen-search)
+
+Search module for the [Lumen PHP framework](http://lumen.laravel.com/).
+
+## Requirements
+
+- PHP 5.3 or newer
+- [Composer](http://getcomposer.org)
+
+## Usage
+
+### Installation
+
+Run the following command to install the package through Composer:
+
+```sh
+composer require nordsoftware/lumen-search
+```
+
+## Contributing
+
+Please read the [guidelines](.github/CONTRIBUTING.md).
+
+## License
+
+See [LICENSE](LICENSE).