token example in lua

Adding an example using lua. 

    $ lua test.lua
    Your Token: IeLhnkFcnnZfEiN04j4H9Avj07ibtkXYDo8S7GpkPtY=
    Fastly token: IeLhnkFcnnZfEiN04j4H9Avj07ibtkXYDo8S7GpkPtY=