Added docs for metrics-web.
Added docs for metrics-web.

gorzell/metrics,gorzell/metrics,thelastpickle/metrics,cirrus-dev/metrics,timezra/metrics,wfxiang08/metrics,randomstatistic/metrics,gburton1/metrics,ohr/metrics,dropwizard/metrics,signalfx/metrics,valery1707/dropwizard-metrics,egymgmbh/metrics,mtakaki/metrics,fcrepo4-archive/metrics,AltitudeDigital/metrics,chenxianghua2014/metrics,mattnelson/metrics,mveitas/metrics,slovdahl/metrics,scullxbones/metrics-scala,slachiewicz/metrics,ind9/metrics,kevintvh/metrics,jplock/metrics,gburton1/metrics,gorzell/metrics,mveitas/metrics,wickedshimmy/metrics-scala,rexren/metrics,ChetnaChaudhari/metrics,erikvanoosten/metrics-scala,maciej/metrics-scala,jasw/metrics,dropwizard/metrics,mspiegel/metrics,infusionsoft/yammer-metrics,bentatham/metrics,mnuessler/metrics,dropwizard/metrics,mt0803/metrics,Banno/metrics,infusionsoft/yammer-metrics,fcrepo4-archive/metrics,tempredirect/metrics,unitsofmeasurement/metrics