plasticine/middleman-imageoptim — pull request #24 by kieranj (2014-11-13 11:34:42+00:00)
Title: Fix specs

The gemspec didn't specify a version of rspec so rspec 3+ is being installed. This is causing errors as 'its' has been extracted to rspec-its and be_true/be_false have been renamed.

This branch fixes those issues