replace jest with ava

node_modules/irregular-plurals/readme.md

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+# irregular-plurals [![Build Status](https://travis-ci.org/sindresorhus/irregular-plurals.svg?branch=master)](https://travis-ci.org/sindresorhus/irregular-plurals)
+
+> Map of nouns to their irregular plural form
+
+
+> An irregular plural in this library is defined as a noun that cannot be made plural by applying these rules:
+> - If the noun ends in an "s", "x", "z", "ch" or "sh", add "es"
+> - If the noun ends in a "y" and is preceded by a consonant, drop the "y" and add "ies"
+> - If the noun ends in a "y" and is preceded by a vowel, add "s"
+
+The list is just a [JSON file](irregular-plurals.json) and can be used anywhere.
+
+
+## Install
+
+```
+$ npm install irregular-plurals
+```
+
+
+## Usage
+
+```js
+const irregularPlurals = require('irregular-plurals');
+
+console.log(irregularPlurals.get('cactus'));
+//=> 'cacti'
+
+console.log(irregularPlurals);
+/*
+Map {
+	[addendum, 'addenda'],
+	[alga, 'algae'],
+	…
+}
+*/
+```
+
+
+## Related
+
+- [plur](https://github.com/sindresorhus/plur) - Pluralize a word
+
+
+## License
+
+MIT © [Sindre Sorhus](https://sindresorhus.com)