diff --git a/README.md b/README.md
index ed30704..f17966e 100644
--- a/README.md
+++ b/README.md
@@ -4,12 +4,12 @@ PHPBench Service Container
 [![Build Status](https://travis-ci.org/phpbench/container.svg?branch=master)](https://travis-ci.org/phpbench/container)
 [![StyleCI](https://styleci.io/repos/55606670/shield)](https://styleci.io/repos/55606670)
 
-This is a simple but powerful (of course its powerful) dependency injection container:
+This is a simple but powerful dependency injection container:
 
 - Extendable (a.k.a service providers);
 - Configurable;
+- Taggable services;
 - Extensions provide default configuration;
-- Service tagging;
 
 This container was developed incidentally for PHPBench, and is not a very
 polished library, but I like it.
@@ -18,7 +18,7 @@ Simple usage
 ------------
 
 ```php
-$container = new Container();
+$container = Container::create();
 $container->register('foobar', function (Container $container) {
     return new \stdClass();
 });
@@ -39,7 +39,6 @@ $container = new Container(
         'foo.bar' => 'my_new_value',
     ]
 );
-$container->init(); // will trigger loading of the extensions.
 ```
 
 ```php
@@ -48,18 +47,25 @@ class MyExtension implements ExtensionInterface
     public function load(Container $container)
     {
         $container->register('my_service', function (Container $container) {
-            return new MyService(
+            $service = new MyService(
                 $container->getParameter('foo_bar'),
                 $container->get('some_other_service')
             );
+
+            // get all tagged services and add them to the instantiated object
+            foreach ($container->getServiceIdsForTag('my_tag') as $serviceId) {
+                $service->add($container->get($serviceId));
+            }
         });
 
         $container->register('tagged_service', function (Container $container) {
-            return new MyService(
+            $service = new MyService(
                 $container->getParameter('foo_bar'),
                 $container->get('some_other_service')
             );
-        }, [ 'tag' => []);
+
+            return $service;
+        }, [ 'my_tag' => [ 'attribute_1' => 'foo' ]); // optional tag attributes
     }
 
     /**
@@ -73,16 +79,6 @@ class MyExtension implements ExtensionInterface
             'foo_bar' => 'this is foo'
         ];
     }
-
-    /**
-     * Build the container.
-     */
-    public function build(Container $container)
-    {
-        foreach ($container->getServiceIdsForTag() as $serviceId) {
-            $container->get('my_service')->add($container->get($serviceId));
-        }
-    }
 }
 ```
 
diff --git a/lib/Container.php b/lib/Container.php
index 6cf34c3..599a4f6 100644
--- a/lib/Container.php
+++ b/lib/Container.php
@@ -92,10 +92,6 @@ public function init()
         foreach ($extensions as $extension) {
             $extension->load($this);
         }
-
-        foreach ($extensions as $extension) {
-            $extension->build($this);
-        }
     }
 
     /**
diff --git a/lib/ExtensionInterface.php b/lib/ExtensionInterface.php
index 628a253..55066e9 100644
--- a/lib/ExtensionInterface.php
+++ b/lib/ExtensionInterface.php
@@ -26,11 +26,4 @@ public function load(Container $container);
      * @return array
      */
     public function getDefaultConfig();
-
-    /**
-     * Called after all services in all extensions have been registered.
-     *
-     * @param Container $container
-     */
-    public function build(Container $container);
 }
diff --git a/tests/Unit/ContainerTest.php b/tests/Unit/ContainerTest.php
index d7f51cb..1dec2cf 100644
--- a/tests/Unit/ContainerTest.php
+++ b/tests/Unit/ContainerTest.php
@@ -107,7 +107,6 @@ public function testRegisterExtension()
         $object = $container->get('foobar');
         $this->assertInstanceOf('stdClass', $object);
         $this->assertEquals('bar', $object->foobar);
-        $this->assertEquals('barfoo', $object->setOnBuild);
     }
 
     /**
@@ -226,9 +225,4 @@ public function load(Container $container)
             return $stdClass;
         });
     }
-
-    public function build(Container $container)
-    {
-        $container->get('foobar')->setOnBuild = 'barfoo';
-    }
 }