Rephrased a couple of things in the CONTRIBUTING file
Rephrased a couple of things in the CONTRIBUTING file

Gobliip/Portus,rhoml/Portus,mssola/Portus,SUSE/Portus,bencevans/Portus,angry-tony/Portus-20170827,liubin/Portus,thuongdinh/Portus,angry-tony/Portus-20170827,Gobliip/Portus,SUSE/Portus,krishnak9/Portus,angry-tony/Portus-20170827,vpereira/Portus,jloehel/Portus,angry-tony/Portus-20170827,bencevans/Portus,vitorarins/Portus,mssola/Portus,mssola/Portus,kwk/Portus,armbuilds/portus,armbuilds/portus,bencevans/Portus,kwk/Portus,vpereira/Portus,jloehel/Portus,morodin/Portus,jloehel/Portus,mssola/Portus,mauromorales/Portus,thuongdinh/Portus,mauromorales/Portus,kwk/Portus,liubin/Portus,thuongdinh/Portus,vitorarins/Portus,morodin/Portus,mauromorales/Portus,morodin/Portus,SUSE/Portus,krishnak9/Portus,liubin/Portus,krishnak9/Portus,Gobliip/Portus,vpereira/Portus,rhoml/Portus,rhoml/Portus,armbuilds/portus,krishnak9/Portus,vitorarins/Portus,SUSE/Portus