doc(readme): installation, usage, license and about sections

Author: jfrosorio

README.md

@@ -1,3 +1,38 @@
 # Laravel Publishable
 
 Laravel package for handling publishable resources.
+
+
+## Installation
+
+Add the package to your Laravel app using composer
+
+```
+composer require codetech/laravel-publishable
+```
+
+
+## Usage
+
+To start using publishable features, simply use the trait on your models.
+
+```
+class Post extends Model
+{
+    use Publishable;
+
+    ...
+```
+
+
+---
+
+
+## License
+
+**codetech/laravel-publishable** is open-sourced software licensed under the [MIT license](https://github.com/CodeTechPt/laravel-publishable/blob/master/LICENSE).
+
+
+## About CodeTech
+
+[CodeTech](https://www.codetech.pt) is a web development agency based on Matosinhos, Portugal. Oh, and we LOVE Laravel!