```ruby

# -*- encoding: utf-8 -*-
require File.expand_path('../lib/themes_for_rails/version', __FILE__)

Gem::Specification.new do |gem|
  gem.authors       = ["Lucas Florio"]
  gem.email         = ["lucasefe@gmail.com"]
  gem.summary       = "Theme Support for Rails 3"
  gem.description   = %q{It allows an application to have many different ways of rendering static assets and dynamic views.}
  gem.homepage      = "https://github.com/lucasefe/themes_for_rails"

  gem.executables   = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }
  gem.files         = `git ls-files`.split("\n")
  gem.test_files    = `git ls-files -- {test,spec,features}/*`.split("\n")
  gem.name          = "themes_for_rails"
  gem.require_paths = ["lib"]
  gem.version       = ThemesForRails::VERSION

  gem.add_dependency('rails', [">= 3.0.0"])
  gem.add_development_dependency "sqlite3"
  gem.add_development_dependency "test-unit"
  gem.add_development_dependency "contest"
  gem.add_development_dependency "mocha"
  gem.add_development_dependency('rails', ["= 3.0.11"])
end
```

Remove duplicate dependency on Rails to prevent RubyGems error.
user
```ruby

# -*- encoding: utf-8 -*-
require File.expand_path('../lib/themes_for_rails/version', __FILE__)

Gem::Specification.new do |gem|
  gem.authors       = ["Lucas Florio"]
  gem.email         = ["lucasefe@gmail.com"]
  gem.summary       = "Theme Support for Rails 3"
  gem.description   = %q{It allows an application to have many different ways of rendering static assets and dynamic views.}
  gem.homepage      = "https://github.com/lucasefe/themes_for_rails"

  gem.executables   = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }
  gem.files         = `git ls-files`.split("\n")
  gem.test_files    = `git ls-files -- {test,spec,features}/*`.split("\n")
  gem.name          = "themes_for_rails"
  gem.require_paths = ["lib"]
  gem.version       = ThemesForRails::VERSION

  gem.add_dependency('rails', [">= 3.0.0"])
  gem.add_development_dependency "sqlite3"
  gem.add_development_dependency "test-unit"
  gem.add_development_dependency "contest"
  gem.add_development_dependency "mocha"
end
```
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