Grunt: Set testswarm/browserSets from JSON file.
Grunt: Set testswarm/browserSets from JSON file.

File on jq03.jquery.com is already updated.

diracdeltas/jquery,sancao2/jquery,Karyotyper/jquery,roytoo/jquery,chitranshi/jquery,jcutrell/jquery,eburgos/jquery,Karyotyper/jquery,jquery/jquery,praveen9102/Shazam,RubyLouvre/jquery,roytoo/jquery,jquery/jquery,roytoo/jquery,diracdeltas/jquery,rwaldron/jquery,demetr84/Jquery,chitranshi/jquery,isaacs/jquery,eburgos/jquery,RubyLouvre/jquery,jcutrell/jquery,gnarf/jquery,demetr84/Jquery,rwaldron/jquery,eburgos/jquery,isaacs/jquery,diracdeltas/jquery,sancao2/jquery,gnarf/jquery,quiaro/request-agent,Karyotyper/jquery,praveen9102/Shazam,sancao2/jquery,jquery/jquery