```ruby
# -*- encoding: utf-8 -*-
lib = File.expand_path('../lib/', __FILE__)
$:.unshift lib unless $:.include?(lib)

require 'authem/version'

Gem::Specification.new do |s|
  s.name = "authem"
  s.version = Authem::VERSION

  s.authors = ["Paul Elliott"]
  s.description = "Authem provides a simple solution for email-based authentication."
  s.email = ["paul@hashrocket.com"]
  s.homepage = "https://github.com/paulelliott/authem"
  s.summary = "Authem authenticates them by email"

  s.files = Dir.glob("{lib,spec}/**/*") + %w(README.markdown)

  s.add_dependency('activesupport', '~> 4.0')
  s.add_dependency('bcrypt-ruby', '~> 3.0.0')

  s.add_development_dependency('actionpack', '~> 4.0')
  s.add_development_dependency('activerecord', '~> 4.0')
  s.add_development_dependency('database_cleaner')
  s.add_development_dependency("rake")
  s.add_development_dependency('rspec')
  s.add_development_dependency('pg')
  s.add_development_dependency('pry')

  s.files = Dir.glob("lib/**/*") + %w(LICENSE README.markdown Rakefile)
  s.require_path = 'lib'
end
```

Add license to the gemfile
user
```ruby
# -*- encoding: utf-8 -*-
lib = File.expand_path('../lib/', __FILE__)
$:.unshift lib unless $:.include?(lib)

require 'authem/version'

Gem::Specification.new do |s|
  s.name = "authem"
  s.version = Authem::VERSION
  s.license = "WTFPL"

  s.authors = ["Paul Elliott"]
  s.description = "Authem provides a simple solution for email-based authentication."
  s.email = ["paul@hashrocket.com"]
  s.homepage = "https://github.com/paulelliott/authem"
  s.summary = "Authem authenticates them by email"

  s.files = Dir.glob("{lib,spec}/**/*") + %w(README.markdown)

  s.add_dependency('activesupport', '~> 4.0')
  s.add_dependency('bcrypt-ruby', '~> 3.0.0')

  s.add_development_dependency('actionpack', '~> 4.0')
  s.add_development_dependency('activerecord', '~> 4.0')
  s.add_development_dependency('database_cleaner')
  s.add_development_dependency("rake")
  s.add_development_dependency('rspec')
  s.add_development_dependency('pg')
  s.add_development_dependency('pry')

  s.files = Dir.glob("lib/**/*") + %w(LICENSE README.markdown Rakefile)
  s.require_path = 'lib'
end
```
assistant