Added Kepler-61. Source: http://arxiv.org/abs/1304.6726
Added KIC 4570949. Source: http://arxiv.org/abs/1304.6841
Added attribute checking to clean-up script.
Corrected typos.
Added new planets. Source: http://arxiv.org/abs/1304.6755
Merge branch 'master' of https://github.com/hannorein/open_exoplanet_catalogue