update install guide 
update install guide 

https://community.openenergymonitor.org/t/initial-setup/1686/3
emoncms/emoncms,emoncms/emoncms,inverse/emoncms,emoncms/emoncms,chaveiro/emoncms,emoncms/emoncms,inverse/emoncms,chaveiro/emoncms,inverse/emoncms,chaveiro/emoncms,emoncms/emoncms,inverse/emoncms,chaveiro/emoncms