Adding omnia logo

Signed-off-by: Lucas A. Wilson <luke.wilson@dell.com>

README.md

@@ -1,4 +1,4 @@
-# Omnia
+<img src="docs/images/omnia-logo.png" width="500px">
 #### Ansible playbook-based deployment of Slurm and Kubernetes on Dell EMC PowerEdge servers running an RPM-based Linux OS
 
 Omnia (Latin: all or everything) is a deployment tool to turn Dell EMC PowerEdge servers with RPM-based Linux images into a functioning Slurm/Kubernetes cluster.