Versioning

[jshermeyer]

Spent awhile working on this to test what torch versions you need to keep stuff from breaking.
Python2.7
torch==0.3.1 ##pip or conda install may fail for this, see https://pytorch.org/get-started/previous-versions/ to get a wheel file.
torchvision==0.2.0 ##These next two must be explicitly stated or else training fails.
torchtext==0.2.3

Pin your requirements people!