Updated CoRoT-22b alt name and discovery method

C. Moutou et. al. 2014
http://adsabs.harvard.edu/abs/2014MNRAS.444.2783M
Added discovery method and year to KOI-1576 d and KOI-285 d

Rowe et al (2014)
http://adsabs.harvard.edu/abs/2014ApJ...784...45R
added discovery method to XO-2s b and c.

Desidera, S. et al 2014
http://adsabs.harvard.edu/cgi-bin/bib_query?arXiv:1407.0251
Merge pull request #416 from ryanvarley/discovery-method-fixes

added missing Discovery method to planets