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files 

        # Gem::Specification.files

(from ruby core)
### Implementation from Specification
---
    files()

---

Files included in this gem.  You cannot append to this accessor, you
must assign to it.

Only add files you can require to this list, not directories, etc.

Directories are automatically stripped from this list when building a
gem, other non-files cause an error.

Usage:

    require 'rake'
    spec.files = FileList['lib/**/*.rb',
                          'bin/*',
                          '[A-Z]*'].to_a

    # or without Rake...
    spec.files = Dir['lib/**/*.rb'] + Dir['bin/*']
    spec.files += Dir['[A-Z]*']
    spec.files.reject! { |fn| fn.include? "CVS" }

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