express: document the effect of settings.trustProxy
express: document the effect of settings.trustProxy

joequant/etherpad-lite,ether/etherpad-lite,ether/etherpad-lite,joequant/etherpad-lite,storytouch/etherpad-lite,ether/etherpad-lite,joequant/etherpad-lite,storytouch/etherpad-lite,storytouch/etherpad-lite,joequant/etherpad-lite