Flesh out README a bit.

README.md

@@ -13,7 +13,10 @@ docker build -t omnibus-docker
 ## Create Container
 
 ```bash
-docker run -ti --rm -e EDITION=ce VERSION=9.1.2 omnibus-docker
+docker run -ti --rm \
+           -e EDITION=ce -e VERSION=9.1.2 \
+           -p 8080:80 -p 2200:22 \
+           omnibus-docker
 ```
 
 ## Create Container With Local Omnibus