use Foo as name of class

Simple-Usage-of-Lightweight-IOC-Container.md

@@ -15,13 +15,13 @@ There are multiple ways to accomplish this and the best solution depends on the
 In this simple usage guide we will only take a look at the most straightforward way that is to just register the interfaces and their classes with the `IocContainer`:
 
 ```c#
-container.Register(new DefaultRegistration<IInterface>(typeof(IInterface), typeof(Implementation), Lifestyle.Transient));
+container.Register(new DefaultRegistration<IInterface>(typeof(IFoo), typeof(Foo), Lifestyle.Transient));
 ```
 
 To make this even easier there is a [`RegistrationFactory`](RegistrationFactory) that helps you create the `IRegistrationBase` you need:
 
 ```c#
-container.Register(RegistrationFactory.Register<IInterface, Implementation>());
+container.Register(RegistrationFactory.Register<IFoo, Foo>());
 ```
 
 There are multiple [[lifestyles|Lifestyles]] available, make sure you choose the correct one for your need.
@@ -31,7 +31,7 @@ There are multiple [[lifestyles|Lifestyles]] available, make sure you choose the
 To resolve an instance with the `IocContainer`, do the following:
 
 ```c#
-IInterface interface = container.Resolve<IInterface>();
+IFoo interface = container.Resolve<IFoo>();
 ```
 
 ## Disposing Container