Added Sparklines controller and dependency, see README. Created method and table...

[selectricity] / app / models / token.rb

class Token < ActiveRecord::Base
  belongs_to :vote 

  def initialize
    super

    token_generator = UniqueTokenGenerator.new( 16 )
    until not token.empty? and Token.find(:all, :conditions => [ "token = ?", token ]).empty?
      self.token = token_generator.token
    end

    self
  end

  def to_s
    self.token
  end
end