```ruby
# encoding: utf-8

gem 'rspec', '~> 2.4'
require 'rspec'
require 'trange_frange'

include TrangeFrange```

Fix pessimistic dependency on rdoc and rspec
user
```ruby
# encoding: utf-8

gem 'rspec', '~> 3.1'
require 'rspec'
require 'trange_frange'

include TrangeFrange
```
assistant