Adding matrices and other setup.py changes

[tavinathanson]

I was getting this error:

Traceback (most recent call last):
  File "./run.py", line 1, in <module>
    from epitopehunt import app
  File "/Users/tavi/drive/work/repos/cancer/epitopehunt/epitopehunt/__init__.py", line 7, in <module>
    from epitopehunt.views import *
  File "/Users/tavi/drive/work/repos/cancer/epitopehunt/epitopehunt/views.py", line 3, in <module>
    from pepdata import iedb
  File "/Users/tavi/.virtualenvs/epitopehunt/lib/python2.7/site-packages/pepdata/__init__.py", line 1, in <module>
    import amino_acid
  File "/Users/tavi/.virtualenvs/epitopehunt/lib/python2.7/site-packages/pepdata/amino_acid.py", line 528, in <module>
    with open(join(MATRIX_DIR,'strand_vs_coil.txt'), 'r') as f:
IOError: [Errno 2] No such file or directory: '/Users/tavi/.virtualenvs/epitopehunt/lib/python2.7/site-packages/pepdata/matrices/strand_vs_coil.txt'

I figured I'd tidy up setup.py a bit while I was in there.