adding documentation
adding documentation

nicola/ldnode,timbl/ldnode,dmitrizagidulin/solid-server-unstable,nicola/ldnode,evWork/nds-server,deiu/ldnode,evWork/nds-server,martinmr/node-ldp-httpd,linkeddata/ldnode,martinmr/node-ldp-httpd,dmitrizagidulin/solid-server-unstable,dmitrizagidulin/solid-server-unstable,timbl/ldnode,evWork/nds-server,deiu/ldnode,linkeddata/ldnode