Add more links and fix README

Author: tgalopin

README.md

@@ -41,8 +41,8 @@ composer require league/flysystem-bundle
 4. [Caching metadata in Symfony cache](https://github.com/thephpleague/flysystem-bundle/blob/master/docs/4-caching-metadata-in-symfony-cache.md)
 5. [Creating a custom adapter](https://github.com/thephpleague/flysystem-bundle/blob/master/docs/5-creating-a-custom-adapter.md)
 
-A. [Security issue disclosure procedure](https://github.com/thephpleague/flysystem-bundle/blob/master/docs/A-security-disclosure-procedure.md)
-B. [Configuration reference](https://github.com/thephpleague/flysystem-bundle/blob/master/docs/B-configuration-reference.md)
+* [Security issue disclosure procedure](https://github.com/thephpleague/flysystem-bundle/blob/master/docs/A-security-disclosure-procedure.md)
+* [Configuration reference](https://github.com/thephpleague/flysystem-bundle/blob/master/docs/B-configuration-reference.md)
 
 ## Security Issues
 

docs/1-getting-started.md

@@ -79,6 +79,10 @@ This means you have two way of using the defined storages:
 
 * or using manual injection, by injecting the service named `default.storage` inside 
   your services.
+  
+Once you have a FilesystemInterface, you can call methods from the
+[Filesystem API](https://flysystem.thephpleague.com/docs/usage/filesystem-api/)
+to interact with your storage.
 
 
 ## Using multiple storages to improve readability