Update banner URL

lucperkins · lucperkins · commit 0c8a5ff72e93 · 2018-10-17T12:55:10.000-07:00
Signed-off-by: lucperkins &lt;lucperkins@gmail.com&gt;
diff --git a/README.md b/README.md
@@ -1,4 +1,4 @@
-![banner](https://github.com/containerd/containerd.io/blob/master/static/img/containerd-dark.png?raw=true)
+![containerd banner](https://raw.githubusercontent.com/cncf/artwork/master/containerd/horizontal/color/containerd-horizontal-color.png)
 
 [![GoDoc](https://godoc.org/github.com/containerd/containerd?status.svg)](https://godoc.org/github.com/containerd/containerd)
 [![Build Status](https://travis-ci.org/containerd/containerd.svg?branch=master)](https://travis-ci.org/containerd/containerd)

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-![banner](https://github.com/containerd/containerd.io/blob/master/static/img/containerd-dark.png?raw=true)`
	`1`	`+![containerd banner](https://raw.githubusercontent.com/cncf/artwork/master/containerd/horizontal/color/containerd-horizontal-color.png)`
`2`	`2`
`3`	`3`	`[![GoDoc](https://godoc.org/github.com/containerd/containerd?status.svg)](https://godoc.org/github.com/containerd/containerd)`
`4`	`4`	`[![Build Status](https://travis-ci.org/containerd/containerd.svg?branch=master)](https://travis-ci.org/containerd/containerd)`