readthedocs is _still_ failing

[Adrian Cruz]

fix that shiznit!

Traceback (most recent call last):
  File "/home/docs/local/lib/python2.7/site-packages/sphinx/cmdline.py", line 253, in main
    warningiserror, tags, verbosity, parallel)
  File "/home/docs/local/lib/python2.7/site-packages/sphinx/application.py", line 107, in __init__
    confoverrides or {}, self.tags)
  File "/home/docs/local/lib/python2.7/site-packages/sphinx/config.py", line 229, in __init__
    execfile_(filename, config)
  File "/home/docs/local/lib/python2.7/site-packages/sphinx/util/pycompat.py", line 105, in execfile_
    exec code in _globals
  File "conf.py", line 67, in <module>
    version = pkg_resources.require("simplebst")[0].version
  File "/home/docs/local/lib/python2.7/site-packages/pkg_resources.py", line 745, in require
    needed = self.resolve(parse_requirements(requirements))
  File "/home/docs/local/lib/python2.7/site-packages/pkg_resources.py", line 639, in resolve
    raise DistributionNotFound(req)
DistributionNotFound: simplebst

Exception occurred:
  File "/home/docs/local/lib/python2.7/site-packages/pkg_resources.py", line 639, in resolve
    raise DistributionNotFound(req)
DistributionNotFound: simplebst
The full traceback has been saved in /tmp/sphinx-err-i5MmIJ.log, if you want to report the issue to the developers.
Please also report this if it was a user error, so that a better error message can be provided next time.
A bug report can be filed in the tracker at <https://bitbucket.org/birkenfeld/sphinx/issues/>. Thanks!