Added docs for metrics-jersey.
Added docs for metrics-jersey.

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