README: add `reload` to list of supported commands
README: add `reload` to list of supported commands

edmcman/vagrant-vsphere,barklyprotects/vagrant-vsphere,higebu/vagrant-vsphere,EdHurtig/vagrant-vsphere,mkuzmin/vagrant-vsphere,vijayviji/vagrant-vsphere,discoposse/vagrant-vsphere,lilirui/vagrant-vsphere