Update README.md

jamesdbrock · web-flow · commit a94e26551802 · 2022-06-09T20:43:18.000+09:00
diff --git a/README.md b/README.md
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 Rational numbers for PureScript
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+[![Maintainer: gbagan](https://img.shields.io/badge/maintainer-gbagan-teal.svg)](https://github.com/gbagan)
+
 Using numbers to do arithmetic with fractions in PureScript may yield surprising results:
 
 ```
