Use minimal bcrypt cost for faster specs.

bcrypt.rb

# Use minimal bcrypt cost for faster specs.
#¬
# place this in the spec/support/bcrypt.rb file¬
#¬
require 'bcrypt'

module BCrypt
  class Engine
    class << self
      alias :_generate_salt :generate_salt
      def generate_salt(cost = MIN_COST)
        _generate_salt(MIN_COST)
      end
    end
  end
end