Switch specs from mock to double (mock is deprecated)
Use stock double-bag-ftps gem (the patch for Ruby 2.0 was merged)
Fix busted link in README
Upgrade yard gem
Upgrade rspec gem
Update rake gem
Update cucumber gem
Update jeweler gem
Upgrade redcarpet to latest version that supports Ruby 1.8
Upgrade timecop gem to latest version that supports Ruby 1.8