Update README for environment filters on services and unmanaged hosts
Update README for environment filters on services and unmanaged hosts

bitmonk/chef-nagios,Piousbox-cookbooks/nagios,OpenGov/nagios,bitmonk/chef-nagios,ovaistariq/nagios,aaronkvanmeerten/nagios,Piousbox-cookbooks/nagios,spudnic/nagios,spudnic/nagios,firebase/nagios,popsikle/nagios-5.3.5,JulianNL/nagios,schubergphilis/nagios,bitmonk/chef-nagios,earzur/nagios,polamjag/nagios,polamjag/nagios,ChrisLundquist/nagios,popsikle/nagios-5.3.5,ChrisLundquist/nagios,Piousbox-cookbooks/nagios,mrlamroger/nagios,schubergphilis/nagios,caleb/nagios,schubergphilis/nagios,OpenGov/nagios,JulianNL/nagios,firebase/nagios,JulianNL/nagios,aaronkvanmeerten/nagios,ovaistariq/nagios,caleb/nagios,spudnic/nagios,aaronkvanmeerten/nagios,mrlamroger/nagios,bitmonk/chef-nagios,earzur/nagios,spudnic/nagios,mrlamroger/nagios,JulianNL/nagios,firebase/nagios,ChrisLundquist/nagios,mrlamroger/nagios,ovaistariq/nagios,Piousbox-cookbooks/nagios,OpenGov/nagios,firebase/nagios,OpenGov/nagios,earzur/nagios,polamjag/nagios