Add enterprise language (#150)

Author: phated

README.md

@@ -13,14 +13,26 @@ Anyway, it's convenient and don't need to build anything to use it. That's how w
 
 *Documentation*: http://gitonomy.com/doc/gitlib/master/
 
----
-
-<div align="center">
-	<b>
-		<a href="https://tidelift.com/subscription/pkg/packagist-gitonomy-gitlib?utm_source=packagist-gitonomy-gitlib&utm_medium=referral&utm_campaign=readme">Get professional support for Git lib with a Tidelift subscription</a>
-	</b>
-	<br>
-	<sub>
-		Tidelift helps make open source sustainable for maintainers while giving companies<br>assurances about security, maintenance, and licensing for their dependencies.
-	</sub>
-</div>
+## Quick Start
+
+You can install git lib using [Composer](https://getcomposer.org/). Simply require the version you need:
+
+```bash
+$ composer require gitonomy/gitlib
+```
+
+or edit your `composer.json` file by hand:
+
+```json
+{
+    "require": {
+        "gitonomy/gitlib": "^1.1"
+    }
+}
+```
+
+## For Enterprise
+
+Available as part of the Tidelift Subscription
+
+The maintainers of `gitonomy/gitlib` and thousands of other packages are working with Tidelift to deliver commercial support and maintenance for the open source dependencies you use to build your applications. Save time, reduce risk, and improve code health, while paying the maintainers of the exact dependencies you use. [Learn more.](https://tidelift.com/subscription/pkg/packagist-gitonomy-gitlib?utm_source=packagist-gitonomy-gitlib&utm_medium=referral&utm_campaign=enterprise&utm_term=repo)