Add note that pbcopy is only available in OSX
Add note that pbcopy is only available in OSX

Change-Id: I4eda3a5a9117b5021fbc6e3625afa01100c39fa6

fabxc/prometheus,dln/prometheus,Stackdriver/stackdriver-prometheus,amorken/prometheus,dsymonds/prometheus,JavierZunzunegui/prometheus,AlekSi/prometheus,hustbill/prometheus,wxdublin/prometheus,wndhydrnt/prometheus,datajet-io/prometheus,PrFalken/prometheus,sudhi-vm/prometheus,tomwilkie/prometheus,jmcfarlane/prometheus,msiebuhr/prometheus,dln/prometheus,q3k/prometheus,laushinka/prometheus,iksaif/prometheus,gesellix/prometheus,SaltedMan/prometheus-annotated,iksaif/prometheus,Dieterbe/prometheus,sudhi-vm/prometheus,cit-lab/prometheus,keegancsmith/prometheus,iksaif/prometheus,msiebuhr/prometheus,datajet-io/prometheus,gottwald/prometheus,adamron1/prometheus,AlekSi/prometheus,Conorbro/prometheus,Conorbro/prometheus,thachmai/prometheus,bluecmd/prometheus,dalanlan/prometheus,brancz/prometheus,amorken/prometheus,thachmai/prometheus,flier/prometheus,agaoglu/prometheus,fabric8io/prometheus,dpatel06/prometheus,robbiet480/prometheus,dln/prometheus,fabxc/prometheus,abhishekamralkar/prometheus,nicr9/prometheus,cit-lab/prometheus,kangwoo/prometheus,justintung/prometheus,wrouesnel/prometheus,agaoglu/prometheus,smyrman/prometheus,jimmidyson/prometheus,kangwoo/prometheus,RobertKielty/prometheus,alileza/prometheus,gcnonato/prometheus,RobertKielty/prometheus,gcnonato/prometheus,flier/prometheus,rajthilakmca/prometheus,smyrman/prometheus,brancz/prometheus,tomwilkie/prometheus,yanghongkjxy/prometheus,jbdalido/prometheus,adamron1/prometheus,RobertKielty/prometheus,dmilstein/prometheus,abhishekamralkar/prometheus,amorken/prometheus,brancz/prometheus,AlekSi/prometheus,Gouthamve/prometheus,q3k/prometheus,gottwald/prometheus,jbdalido/prometheus,Colstuwjx/prometheus,kzittritsch/prometheus,dmilstein/prometheus,cit-lab/prometheus,wndhydrnt/prometheus,wrouesnel/prometheus,slok/prometheus,laushinka/prometheus,abhishekamralkar/prometheus,rajthilakmca/prometheus,robbiet480/prometheus,brancz/prometheus,jmcfarlane/prometheus,nicr9/prometheus,slok/prometheus,ton31337/prometheus,hustbill/prometheus,amorken/prometheus,kzittritsch/prometheus,bluecmd/prometheus,mrwacky42/prometheus,fabxc/prometheus,iksaif/prometheus,Gouthamve/prometheus,cit-lab/prometheus,prometheus/prometheus,GoogleCloudPlatform/prometheus,slok/prometheus,Colstuwjx/prometheus,PrFalken/prometheus,msiebuhr/prometheus,GoogleCloudPlatform/prometheus,mtanda/prometheus,SaltedMan/prometheus-annotated,Colstuwjx/prometheus,brian-brazil/prometheus,mtanda/prometheus,datajet-io/prometheus,prasincs/prometheus,gesellix/prometheus,brian-brazil/prometheus,rajthilakmca/prometheus,PrFalken/prometheus,justintung/prometheus,robbiet480/prometheus,prasincs/prometheus,ton31337/prometheus,mrwacky42/prometheus,smyrman/prometheus,abhishekamralkar/prometheus,gcnonato/prometheus,Dieterbe/prometheus,gottwald/prometheus,flier/prometheus,sudhi-vm/prometheus,rajthilakmca/prometheus,gottwald/prometheus,dpatel06/prometheus,JavierZunzunegui/prometheus,mrwacky42/prometheus,AlekSi/prometheus,alileza/prometheus,Conorbro/prometheus,eliothedeman/prometheus,dalanlan/prometheus,Stackdriver/stackdriver-prometheus,JavierZunzunegui/prometheus,jimmidyson/prometheus,hustbill/prometheus,msiebuhr/prometheus,dsymonds/prometheus,laushinka/prometheus,keegancsmith/prometheus,prasincs/prometheus,jimmidyson/prometheus,wxdublin/prometheus,yanghongkjxy/prometheus,PrFalken/prometheus,laushinka/prometheus,trigrass2/prometheus,eliothedeman/prometheus,nicr9/prometheus,mtanda/prometheus,gesellix/prometheus,gcnonato/prometheus,eliothedeman/prometheus,kangwoo/prometheus,tattsun/prometheus,ton31337/prometheus,adamron1/prometheus,RobertKielty/prometheus,dsymonds/prometheus,yanghongkjxy/prometheus,justintung/prometheus,GoogleCloudPlatform/prometheus,SaltedMan/prometheus-annotated,Colstuwjx/prometheus,q3k/prometheus,datajet-io/prometheus,alileza/prometheus,prasincs/prometheus,tattsun/prometheus,tomwilkie/prometheus,jmcfarlane/prometheus,bluecmd/prometheus,GoogleCloudPlatform/prometheus,dpatel06/prometheus,prometheus/prometheus,eliothedeman/prometheus,gesellix/prometheus,dalanlan/prometheus,kzittritsch/prometheus,fabric8io/prometheus,mtanda/prometheus,thachmai/prometheus,slok/prometheus,Gouthamve/prometheus,jmcfarlane/prometheus,trigrass2/prometheus,kzittritsch/prometheus,wrouesnel/prometheus,jbdalido/prometheus,wrouesnel/prometheus,sudhi-vm/prometheus,dln/prometheus,Stackdriver/stackdriver-prometheus,ton31337/prometheus,kangwoo/prometheus,thachmai/prometheus,prometheus/prometheus,prometheus/prometheus,tattsun/prometheus,Stackdriver/stackdriver-prometheus,dsymonds/prometheus,agaoglu/prometheus,yanghongkjxy/prometheus,keegancsmith/prometheus,hustbill/prometheus,SaltedMan/prometheus-annotated,tattsun/prometheus,keegancsmith/prometheus,adamron1/prometheus,alileza/prometheus,justintung/prometheus,JavierZunzunegui/prometheus,jbdalido/prometheus,robbiet480/prometheus,smyrman/prometheus,agaoglu/prometheus,Gouthamve/prometheus,tomwilkie/prometheus,alileza/prometheus,keegancsmith/prometheus,dmilstein/prometheus,bluecmd/prometheus,GoogleCloudPlatform/prometheu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