Reverse dependencies for omnitest-core

Latest version of the following gems require omnitest-core

Gem	Version	Date	Downloads
omnitest-skeptic +6.8 Thousand Downloads	`0.0.3` February 25, 2015	February 25, 2015	6.8 Thousand
omnitest +6.63 Thousand Downloads	`0.2.2` February 26, 2015	February 26, 2015	6.63 Thousand
omnitest-psychic +3.78 Thousand Downloads	`0.0.9` February 25, 2015	February 25, 2015	3.78 Thousand