Implementation Phase

   For the implementation phase, we are very lucky that what we should do is probably the easiest one, the Spin.
   The design team also has a pretty simple design, so this assignment turn out to be very easy.
   Our team leader assign the work to every body. What I should do is only create the project and finish the node class, which is quite a simple job.
    After that, our team write the unit test and finish the whole project almost without me, that's quit a simple task.