drop rails 3.0, require at least 3.1
drop rails 3.0, require at least 3.1

slim-template/slim,slim-template/slim,Nikeshsuwal/slim,XueQian/slim,cheunghy/slim,ruijsun/slim,sideci-sample/sideci-sample-slim,fly19890211/slim,ericboehs/slim,etdev/slim,metallurgical/slim,ruijsun/slim,mojavelinux/slim,zakuro9715/slim,metallurgical/slim,JuanitoFatas/slim,slim-template/slim,mojavelinux/slim,fly19890211/slim,ericboehs/slim,Nikeshsuwal/slim,etdev/slim,raxoft/slim,raxoft/slim,JuanitoFatas/slim,cheunghy/slim,zakuro9715/slim,XueQian/slim