Update README.md

README.md

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+[![PyPI version](https://img.shields.io/pypi/v/sfas.svg)](https://pypi.org/project/sfas/)
+[![Downloads shield](https://pepy.tech/badge/sfas)](https://pepy.tech/project/sfas)
+[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)
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 # Small Feedback Arc Set (sfas)
 Efficient implementation of a greedy algorithm for computing small feedback arc sets in directed weighted multi-graphs.
 This implementation is an adaptation of the algorithm described in Section 2.3 of [this](http://www.vldb.org/pvldb/vol10/p133-simpson.pdf) article, with additional generalization to support weights and parallel edges.
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 ### Result:
 1. `List` with all nodes, ordered so that the total weight of edges going backwards (w.r.t. this order) is small
 ## Questions / suggestions welcome
-`[email protected]`
+`[email protected]`