zun: move to use-cases, utilize images dir

Fixes: #417

Signed-off-by: Eric Ernst <eric.ernst@intel.com>

README.md

@@ -18,7 +18,7 @@ For details of the other Kata Containers repositories, see the
 [`runc`](https://github.com/opencontainers/runc).
 
 * HOWTO: [Kata Containers with k8s and cri-containerd](./how-to/how-to-use-k8s-with-cri-containerd-and-kata.md)
-* HOWTO: [OpenStack Zun with Kata Containers](zun/zun_kata.md)
+* HOWTO: [OpenStack Zun with Kata Containers](./use-cases/zun_kata.md)
 * HOWTO: [Kata Containers with Firecracker](https://github.com/kata-containers/documentation/wiki/Initial-release-of-Kata-Containers-with-Firecracker-support)
 * HOWTO: [Sysctls with Kata Containers](./how-to/how-to-use-sysctls-with-kata.md)
 * HOWTO: [VM Templating](./how-to/what-is-vm-cache-and-how-do-I-use-it.md) and [VM Cache](./how-to/what-is-vm-cache-and-how-do-I-use-it.md)

use-cases/zun_kata.md

@@ -101,22 +101,22 @@ sudo systemctl daemon-reload
 sudo systemctl restart docker
 ```
 
-![kata zun image 1](kata-zun1.png)
+![kata zun image 1](./images/kata-zun1.png)
 
 Figure 1: Create a busybox container image
 
-![kata zun image 2](kata-zun2.png)
+![kata zun image 2](./images/kata-zun2.png)
 
 Figure 2: Select `kata-runtime` to use
 
-![kata zun image 3](kata-zun3.png)
+![kata zun image 3](./images/kata-zun3.png)
 
 Figure 3: Two busybox containers successfully launched
 
-![kata zun image 4](kata-zun4.png)
+![kata zun image 4](./images/kata-zun4.png)
 
 Figure 4: Test connectivity between Kata Containers
 
-![kata zun image 5](kata-zun5.png)
+![kata zun image 5](./images/kata-zun5.png)
 
 Figure 5: CLI for Zun