Dependency for virtualbox missing from README file #1
Description
Took the tutorial for a spin on Centos 7 and Ubuntu 16.04 and VirtualBox is a requirement it seems;
E0131 12:19:35.595295 4561 start.go:96] Error starting host: Error creating host: Error with pre-create check: "VBoxManage not found. Make sure VirtualBox is installed and VBoxManage is in the path".