Removed PHP 5.3 from the list of platforms
Removed PHP 5.3 from the list of platforms

PHPBenelux/opencfp,PHPmvd/phpday-cfp,DevOpsDaysChicago/opencfp,xavierleune/cfp,PHPmvd/phpday-cfp,phphants/opencfp,opencfp/opencfp,DragonBe/opencfp-azure,DragonBe/opencfp-azure,xavierleune/cfp,zymsys/opencfp,OpenWestConference/opencfp,DallasPHP/opencfp,monoku/opencfp,opencfp/opencfp,pmeth/opencfp,phphants/opencfp,DevOpsDaysChicago/opencfp,phphants/opencfp,sunshinephp/opencfp,DragonBe/opencfp-azure,phphants/opencfp,DevOpsDaysChicago/opencfp,localheinz/opencfp,DragonBe/opencfp-azure,noahd1/opencfp,opencfp/opencfp,monoku/opencfp,jugisahunk/200OK_CFP,Acidburn0zzz/opencfp,pmeth/opencfp,jugisahunk/200OK_CFP,GrUSP/opencfp,mdwheele/opencfp,PHPBenelux/opencfp,DallasPHP/opencfp,localheinz/opencfp,GrUSP/opencfp,mdwheele/opencfp,MidwestPHP/opencfp_mwphp15,chrispecoraro/opencfp,Acidburn0zzz/opencfp,MidwestPHP/opencfp_mwphp15,brynary/opencfp,DallasPHP/opencfp,localheinz/opencfp,MidwestPHP/opencfp_mwphp15,localheinz/opencfp,OpenWestConference/opencfp,zhenqing/opencfp,brynary/opencfp,zymsys/opencfp,zymsys/opencfp,xavierleune/cfp,monoku/opencfp,MidwestPHP/opencfp_mwphp15,zhenqing/opencfp,noahd1/opencfp,monoku/opencfp,madisonphp/opencfp,mdwheele/opencfp,OpenWestConference/opencfp,noahd1/opencfp,Acidburn0zzz/opencfp,PHPBenelux/opencfp,sunshinephp/opencfp,DragonBe/opencfp-azure,madisonphp/opencfp,PHPBenelux/opencfp,pmeth/opencfp,mdwheele/opencfp,chrispecoraro/opencfp,jugisahunk/200OK_CFP,GrUSP/opencfp,zhenqing/opencfp,OpenWestConference/opencfp,sunshinephp/opencfp,GrUSP/opencfp,brynary/opencfp,madisonphp/opencfp