Regenerate gemspec for version 2.1.5
Regenerate gemspec for version 2.1.5

fredguth/kitchenplan,kitchenplan/kitchenplan,CraigCottingham/kitchenplan,franklouwers/kitchenplan,kitchenplan/kitchenplan,wchrisjohnson/kitchenplan,zakeeruddin21/kitchenplan,hedywoo/kitchenplan,CraigCottingham/kitchenplan,hedywoo/kitchenplan,18thletter/kitchenplan,wchrisjohnson/kitchenplan,franklouwers/kitchenplan,fredguth/kitchenplan,zakeeruddin21/kitchenplan,brodock/kitchenplan,brodock/kitchenplan,optimizely/kitchenplan,18thletter/kitchenplan