Reverse dependencies for to_lang

Latest version of the following gems require to_lang

Gem	Version	Date	Downloads
has_many_translations +37.2 Thousand Downloads	`0.4.6` October 30, 2011	October 30, 2011	37.2 Thousand
cinch-translate +5.91 Thousand Downloads	`0.0.1` January 30, 2011	January 30, 2011	5.91 Thousand
lita-google-translate +3.83 Thousand Downloads	`0.1.0` June 18, 2015	June 18, 2015	3.83 Thousand