really add requests 2.7 to tox
really add requests 2.7 to tox

graingert/vcrpy,gwillem/vcrpy,kevin1024/vcrpy,graingert/vcrpy,aclevy/vcrpy,ByteInternet/vcrpy,ByteInternet/vcrpy,IvanMalison/vcrpy,agriffis/vcrpy,bcen/vcrpy,poussik/vcrpy,poussik/vcrpy,mgeisler/vcrpy,kevin1024/vcrpy,yarikoptic/vcrpy