Require RSpec ~> 2.14.1

Pessimistically require only RSpec versions
greater than or equal to 2.14.1 or less than
3.0.0.  RSpec 3.0.0 can be enabled and the
pessimistic constraint removed after compatibility
is established.
Update version info, v1.13.2

Requires RSpec 2.14.1 with pessimistic version
constraint.  Will be replaced in the future by
a version that establishes RSpec 3.0.0 beta
compatibility.
Update specs with transcode

Unlock RSpec in Gemspec
Temporarily remove Gemfile.lock
Update specs with transcode
Disable screenshots (RSpec)
RSpec 2.14.1 Compatible

Restore screenshots in spec_helper.rb
Example.exception and description handling are now compatible
with RSpec 3.0.0.beta2.
Clean up after(:each) (RSpec)
Add Gemfile.lock (RSpec 2.14.1)
Update version info, 1.13.3