Add testing under ruby-2.0.0, remove pinning rubygems version
Add testing under ruby-2.0.0, remove pinning rubygems version

paul-krohn/fpm,mildred/fpm,joseph-onsip/fpm,dischord01/fpm,snailwalker/fpm,Tapjoy/fpm,virtkick/fpm,virtkick/fpm,tjyang/fpm,hlawrenz/fpm,cturra/fpm,rbramwell/fpm,paul-krohn/fpm,fetep/fpm,fetep/fpm,elvido/fpm,fetep/fpm,sideci-sample/sideci-sample-fpm,Tapjoy/fpm,schatt/fpm,linearregression/fpm,rbramwell/fpm,linearregression/fpm,gearmover/fpm,elvido/fpm,josephfrazier/fpm,hlawrenz/fpm,sideci-sample/sideci-sample-fpm,mildred/fpm,godp1301/fpm,hlawrenz/fpm,paul-krohn/fpm,snailwalker/fpm,jerizm/fpm,rbramwell/fpm,tjyang/fpm,doghrim/fpm,snailwalker/fpm,vi4m/fpm,schatt/fpm,mzaccari/fpm,joseph-onsip/fpm,cturra/fpm,cturra/fpm,doghrim/fpm,godp1301/fpm,dischord01/fpm,schatt/fpm,gearmover/fpm,wyaeld/fpm,hlawrenz/fpm,vi4m/fpm,dischord01/fpm,pskrz/fpm,josephfrazier/fpm,djhaskin987/merge-demo,mzaccari/fpm,Tapjoy/fpm,joseph-onsip/fpm,sideci-sample/sideci-sample-fpm,pskrz/fpm,josephfrazier/fpm,tjyang/fpm,mzaccari/fpm,gearmover/fpm,jerizm/fpm,doghrim/fpm,wyaeld/fpm,pskrz/fpm,djhaskin987/merge-demo,Tapjoy/fpm,joseph-onsip/fpm,jerizm/fpm,jerizm/fpm,tjyang/fpm,wyaeld/fpm,virtkick/fpm,dischord01/fpm,linearregression/fpm,virtkick/fpm,djhaskin987/merge-demo,vi4m/fpm,rbramwell/fpm,doghrim/fpm,cturra/fpm,wyaeld/fpm,schatt/fpm,vi4m/fpm,josephfrazier/fpm,fetep/fpm,gearmover/fpm,paul-krohn/fpm,godp1301/fpm,mzaccari/fpm,godp1301/fpm,linearregression/fpm,elvido/fpm,mildred/fpm,snailwalker/fpm,elvido/fpm,mildred/fpm,pskrz/fpm