two minor fixes to besancon
fix header parsing with a slightly cleverer approach (though clever it
is not) and tests accordingly
Merge pull request #342 from keflavich/besancon_minor

Minor fixes to Besancon
Merge branch 'master' of github.com:astropy/astroquery into issue284-2
Merge branch 'issue284-2' of github.com:derdon/astroquery into issue284-2