Merge pull request #24 from gnumoksha/patch-1

docs: Standardize the README

Author: Jean85

README.md

@@ -1,5 +1,13 @@
-# PSR Container
+Container interface
+==============
 
-This repository holds all interfaces/classes/traits related to [PSR-11](https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-11-container.md).
+This repository holds all interfaces related to [PSR-11 (Container Interface)][psr-url].
+
+Note that this is not a Container implementation of its own. It is merely abstractions that describe the components of a Dependency Injection Container.
+
+The installable [package][package-url] and [implementations][implementation-url] are listed on Packagist.
+
+[psr-url]: https://www.php-fig.org/psr/psr-11/
+[package-url]: https://packagist.org/packages/psr/container
+[implementation-url]: https://packagist.org/providers/psr/container-implementation
 
-Note that this is not a container implementation of its own. See the specification for more details.