added classes IntTensor and IntStorage

added a method __len__(..) to class GenericTorchTensor

added support for single number indices in GenericTorchTensor.__getitem__

added support for reading gzipped and bzipped files (inferred from the filename)

added a (convenience) method torchio.read(..)

in class InputFile: added support for giving a string (filename) instead of a file like object to the constructor

added class Sigmoid to package nn

bugfix in OutputFile.writeObject(..): was using "str" instead of "obj"

bugfix in OutputFile.writeTable(..): inverted logic when using isNew

removed more debug printouts

removed debug printout

modified README.md

initial commit: test program for writing float tensors

initial support for writing FloatTensors

moved magic numbers to a new file iocommon.py