Doodle classification visualization

Hello,

I've created simple visualization for doodle classification example. It shows every doodle with coresponding prediction from NN.

Sample screenshot:


white background = NN was correct
red background = guessed "cat"
green background = guessed "rainbow"
blue background = guessed "train"

In first table in console each row is number of mistakes for every pair label:classification.

Second table is raw list of wrong guesses in format: (index), doodle number, label, classification, guess "cat", guess "rainbow", guess "train".

In overall, looks like NN is pretty consistent with rainbow doodles, but not so much with cats and trains.

Comienza inspeccionando el área examples/doodle_classification y el archivo referenciado tmp/doodle-screenshot.jpg; después, compara la visualización descrita y las tablas de la consola con el ejemplo actual. El issue no especifica si se debe añadir, revisar o documentar la visualización, así que confirma el entregable previsto antes de definir qué significa que esté terminado.

Escrito por el modelo de indexación a partir del texto del issue.