Merge pull request #70 from ryanvarley/master

Various updates from ryanvarley/master.
Added new planets. http://arxiv.org/abs/1311.5271
Corrected a typo in the name of the outer planet of HD 159243. Source: http://arxiv.org/abs/1311.5271
Corrected a typo.
Corrected a typo.
Corrected a typo.
Changed the wording of the description slightly.

I changed "From the transiting planets discovered from the ground, WASP-84 b has the third longest period" to "Of the transiting planets discovered from the ground, WASP-84 b has the third longest period".
English is not my first language, but the original wording sounded off to me. I hope the alternative is better.
Corrected a typo.
Merge pull request #72 from knutover/master

Correction of typos.