update readme with support info and remove todos in favor of the gh issue list
update readme with support info and remove todos in favor of the gh issue list

devopsgroup-io/vagrant-digitalocean,duleorlovic/vagrant-digitalocean,blueprintmrk/vagrant-digitalocean,timani/vagrant-digitalocean,adampats/vagrant-digitalocean,scub/vagrant-linode,timani/vagrant-digitalocean,Jurisdesk/vagrant-digitalocean,oddnoc/vagrant-digitalocean,blueprintmrk/vagrant-digitalocean,Jdesk/vagrant-digitalocean,hiroraba/vagrant-digitalocean,jhoblitt/vagrant-digitalocean,akerl/vagrant-linode,displague/vagrant-linode,displague/vagrant-linode,devopsgroup-io/vagrant-digitalocean,visualphoenix/vagrant-digitalocean,Jdesk/vagrant-digitalocean,hiroraba/vagrant-digitalocean,tmoreira2020/vagrant-digitalocean,scub/vagrant-linode,adampats/vagrant-digitalocean,wizonesolutions/vagrant-digitalocean,smdahlen/vagrant-digitalocean,duleorlovic/vagrant-digitalocean,smdahlen/vagrant-digitalocean,oddnoc/vagrant-digitalocean,visualphoenix/vagrant-digitalocean,jhoblitt/vagrant-digitalocean,Jurisdesk/vagrant-digitalocean,wizonesolutions/vagrant-digitalocean,akerl/vagrant-linode,tmoreira2020/vagrant-digitalocean