This code was designed to the Codenation challenge for selection of the C# course.
First, the user needs to inform his token, gived by Codenation Platform, and click in the "Enviar" button. Then, Codenation Platform validates the token and return the encrypted text.
Second, the encrypted text will be automatically decrypted and showed in the page.
Finally, the user needs to click in the "Enviar Resposta" button and wait his grade, returned by Codenation Platform, that will be showed in the page.