2.1.1. with fixed BAO data, cosmic clocks and WiggleZ bao

* 2.1:
  ready for 2.1.1
  added bao measurements from WiggleZ, 1401.0358v2
  cleaned up data for WiggleZ
  style change
  Improved help for --extra, #23
  Slight modification of #29
  added deprecation warning for old command line arguments
  mocked classy for read the docs
  moved a bogus import to fix #27
  typo in file name
  update for cosmic clocks
  comment on over_sampling, typo in parser
  added Ross et.al 2014 new bao data
  ignoring coverage information
  prepared setup for pip install
  bug-fix in mcmc for None upper boundary
  added data for Hz measurements
  added Hz measurements
  got rid definitely (please) of rs_rescale in bao data
  removed unwanted pandas from JLA, and improved error message
Fixing ReadTheDocs

* 2.1:
  more fix for ReadTheDocs
fixes #31
Merge branch 'dict_comprehension' of github.com:montefra/montepython_public into montefra-dict_comprehension

* 'dict_comprehension' of github.com:montefra/montepython_public:
  fixes #31
Fix #31 by @montefra, now py26 supported again

* montefra-dict_comprehension:
  fixes #31