Merge pull request #177 from cdeil/issue_177

NRAO test failures on Mac
Add missing license line and minor cleanup
Run autopep8 on astroquery

The exact command run was
autopep8 -i --ignore E501,E126,E128,E225,E226,E231 -r astroquery scripts
with no further manual changes.
Remove license copy from besancon/reader.py


This is the usual format to only have the license line.
See discussion in https://github.com/astropy/astroquery/pull/172