docs: add details

Author: xchopin

README.md

@@ -1,6 +1,8 @@
 # OpenLRW - PHP Api Client
 
-> The easier way to implement OpenLRW into your PHP applications
+> The easier way to implement OpenLRW into your PHP applications (the documentation is not finished)
+
+This API Client was inspired by the Laravel Framework, it allows you to do HTTP requests to the OpenLRW API but also to manipulate objects from these requests.
 
 <p align="center">
 <img src="https://scrutinizer-ci.com/g/Apereo-Learning-Analytics-Initiative/OpenLRW-php-api-client/badges/quality-score.png?b=master" title="Scrutinizer Code Quality">
@@ -9,26 +11,42 @@
 </p>
 
 ## Requirements
-
+ - PHP >= 5.6
+ 
+ 
 ## Install
 `$ composer require openlrw/api-client`
 
 
 ## Usage
 
-#### Initialize the client
+### Initialize the client
 ```php
 use OpenLRW\OpenLRW;
 
 $client = new OpenLRW(URL, KEY, PASSWORD);
 ```
 
-#### Check if the server is up
+### Using OneRoster Model
+> Example with the User collection
+
+#### Get an entity
 ```php
+$user = User::find('foo-bar');
+echo $user->sourcedId; // return 'foo-bar'
+```
 
-$isUp = OpeLRW::isUp();
-// or
-$isUp = $client::isUp();
+#### Delete
+```php
+$user = User::find('foo-bar');
+$user->delete(); // User deleted
+```
+
+
+### Helpers
+#### Check if the server is up
+```php
+$isServerUp = OpenLRW::isUp();
 ```