UNLimg: Generate an image based on the hash of string

This class can be used to generate an image based on the hash of string.

It takes a text string and computes its hash using SHA1 algorithm.

The class renders an image with filled polygons defined by the resulting hashed string.

In Portuguese:

A classe computa o hash de uma string e usa esse valor para gerar uma imagem única, semelhante ao Identicon criado por Don Park.