Use new logo and character at top of README.md

Author: alexmg

README.md

@@ -1,4 +1,9 @@
-![Autofac](https://autofac.org/img/carousel-logo.png)
+<p align="center">
+  <img src="https://autofac.org/img/autofac_web-banner_character.svg" width="250">
+</p>
+<p align="center">
+  <img src="https://autofac.org/img/autofac_logo-type.svg" height="100">
+</p>
 
 Autofac is an [IoC container](http://martinfowler.com/articles/injection.html) for Microsoft .NET. It manages the dependencies between classes so that **applications stay easy to change as they grow** in size and complexity. This is achieved by treating regular .NET classes as *[components](https://autofac.readthedocs.io/en/latest/glossary.html)*.