updated description in README.md again

updated description in README.md

updated "Metric" section in README.md

Added metric and usage to README.md

added library_name to README.md

added README.md

epoch: 16, accuracy: 0.809

epoch: 7, accuracy: 0.802

epoch: 5, accuracy: 0.7995

epoch: 2, accuracy: 0.7895

epoch: 1, accuracy: 0.7725

epoch: 0, accuracy: 0.764

initial commit