Reverse dependencies for tux

Latest version of the following gems require tux

Gem	Version	Date	Downloads
rack_warden +26.8 Thousand Downloads	`0.0.10` February 05, 2015	February 05, 2015	26.8 Thousand
device-tracker +14.3 Thousand Downloads	`0.2.3` November 18, 2015	November 18, 2015	14.3 Thousand
irontask +7.41 Thousand Downloads	`0.0.4` October 03, 2013	October 03, 2013	7.41 Thousand
grape-cli-mongodb +4.73 Thousand Downloads	`1.0.2` February 11, 2018	February 11, 2018	4.73 Thousand