version 1.2.1 in setup

Merge pull request #20 from cjbattey/set_h5py_version

set h5py version in setup.py. This should address the bug reported in #19.

Merge pull request #13 from kr-colab/ct_script

final python plotting!

Merge pull request #4 from kern-lab/andrewkern-patch-1

update readme