Update README.md

Author: antonio-f

README.md

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-# TensorFlow2_digits_classification-Linear_Classifier-MLP
-TensorFlow2 digits classification - Linear Classifier and MLP
+# TensorFlow2 digits classification - Linear Classifier and MLP
+
+Digits classification with TensorFlow 2 on MNIST dataset.
+
+Models tested: Linear Classifier, MultiLayer Perceptron (MLP).
+
+Libraries needed: TensorFlow 2.X, Matplotlib, NumPy.