Gem isn't compatible with rest-client 2.1 or higher #7
Description
This gem is locked to the 2.0.x series of rest-client, while the latest release (which is required by some other gems, like mailgun-ruby) is 2.1.0.
There are not supposed to be any breaking changes from 2.0.2 to 2.1.0 ( https://github.com/rest-client/rest-client/blob/master/history.md ) so the dependency spec could probably just be relaxed to >= 2.0.2 or ~> 2.0.