Remove platform requirement of simplecov in the Gemfile
Remove platform requirement of simplecov in the Gemfile

Since simplecov is needed for all Ruby versions > 1.8

WilsonChiang/Markus,finnergizer/Markus,reidka/Markus,jeremygoh/Markus,SoftwareDev/Markus,binuri/Markus,ealonas/Markus,binuri/Markus,david-yz-liu/Markus,reidka/Markus,wkwan/Markus,SoftwareDev/Markus,wkwan/Markus,WilsonChiang/Markus,wkwan/Markus,jeremygoh/Markus,jeremygoh/Markus,arkon/Markus,benjaminvialle/Markus,arkon/Markus,reidka/Markus,finnergizer/Markus,MarkUsProject/Markus,binuri/Markus,david-yz-liu/Markus,Lysette/Markus,ealonas/Markus,SoftwareDev/Markus,binuri/Markus,MarkUsProject/Markus,WilsonChiang/Markus,melneubert/Markus,finnergizer/Markus,melneubert/Markus,ealonas/Markus,finnergizer/Markus,david-yz-liu/Markus,binuri/Markus,finnergizer/Markus,arkon/Markus,jeremygoh/Markus,ealonas/Markus,finnergizer/Markus,arkon/Markus,SoftwareDev/Markus,melneubert/Markus,reidka/Markus,wkwan/Markus,benjaminvialle/Markus,wkwan/Markus,WilsonChiang/Markus,finnergizer/Markus,Lysette/Markus,MarkUsProject/Markus,binuri/Markus,david-yz-liu/Markus,ealonas/Markus,jeremygoh/Markus,WilsonChiang/Markus,melneubert/Markus,david-yz-liu/Markus,binuri/Markus,finnergizer/Markus,david-yz-liu/Markus,WilsonChiang/Markus,jeremygoh/Markus,melneubert/Markus,david-yz-liu/Markus,ealonas/Markus,wkwan/Markus,benjaminvialle/Markus,jeremygoh/Markus,reidka/Markus,SoftwareDev/Markus,arkon/Markus,Lysette/Markus,melneubert/Markus,wkwan/Markus,arkon/Markus,Lysette/Markus,benjaminvialle/Markus,WilsonChiang/Markus,jeremygoh/Markus,WilsonChiang/Markus,MarkUsProject/Markus,reidka/Markus,MarkUsProject/Markus,reidka/Markus,Lysette/Markus,ealonas/Markus,wkwan/Markus,MarkUsProject/Markus,melneubert/Markus,reidka/Markus,binuri/Markus,benjaminvialle/Markus,finnergizer/Markus,ealonas/Markus,MarkUsProject/Markus,melneubert/Markus,SoftwareDev/Markus,WilsonChiang/Markus,reidka/Markus,benjaminvialle/Markus,SoftwareDev/Markus,Lysette/Markus,binuri/Markus,arkon/Markus,Lysette/Markus,wkwan/Markus,jeremygoh/Markus,ealonas/Markus,melneubert/Markus,MarkUsProject/Markus,benjaminvialle/Markus,david-yz-liu/Markus,arkon/Markus,david-yz-liu/Markus,arkon/Markus