Update README.md

Author: odannyc

README.md

@@ -1,2 +1,55 @@
 # yii2-sse
 Yii2 SSE is a wrapper for the library libSSE-php. Its used for managing Server Sent Events in Yii2.
+
+## Installation
+You'll be installing this package through composer.
+
+Run this command within your project folder: `composer require odannyc/yii2-sse`
+
+## Usage
+*These steps are for the simple/basic Yii2 project.*
+
+Edit your `web.php` config file which is located usually in `app/config/web.php`
+
+``` php
+'components' => [
+  ...
+  'sse' => [
+    'class' => \odannyc\Yii2SSE\LibSSE::class
+  ]
+  ...
+];
+```
+
+You'll have to create a handler for your SSE instance. Usually located in `app/sse/`.
+```php
+use odannyc\Yii2SSE\SSEBase;
+
+class MessageEventHandler extends SSEBase
+{
+  public function check()
+  {
+    return true;
+  }
+
+  public function update()
+  {
+    return "Something Cool";
+  }
+}
+```
+
+Then, anywhere in your controller:
+
+``` php
+public function actionIndex()
+{
+  $sse = Yii::$app->sse;
+  $sse->addEventListener('message', new MessageEventHandler());
+  $sse->start();
+}
+```
+
+## More information
+For more information on using the SSE functionalites of this package visit:
+https://github.com/licson0729/libSSE-php