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+# y18n
+
+[![Build Status][travis-image]][travis-url]
+[![Coverage Status][coveralls-image]][coveralls-url]
+[![NPM version][npm-image]][npm-url]
+[![js-standard-style][standard-image]][standard-url]
+
+The bare-bones internationalization library used by yargs.
+
+Inspired by [i18n](https://www.npmjs.com/package/i18n).
+
+## Examples
+
+_simple string translation:_
+
+```js
+var __ = require('y18n').__
+
+console.log(__('my awesome string %s', 'foo'))
+```
+
+output:
+
+`my awesome string foo`
+
+_pluralization support:_
+
+```js
+var __n = require('y18n').__n
+
+console.log(__n('one fish %s', '%d fishes %s', 2, 'foo'))
+```
+
+output:
+
+`2 fishes foo`
+
+## JSON Language Files
+
+The JSON language files should be stored in a `./locales` folder.
+File names correspond to locales, e.g., `en.json`, `pirate.json`.
+
+When strings are observed for the first time they will be
+added to the JSON file corresponding to the current locale.
+
+## Methods
+
+### require('y18n')(config)
+
+Create an instance of y18n with the config provided, options include:
+
+* `directory`: the locale directory, default `./locales`.
+* `updateFiles`: should newly observed strings be updated in file, default `true`.
+* `locale`: what locale should be used.
+* `fallbackToLanguage`: should fallback to a language-only file (e.g. `en.json`)
+  be allowed if a file matching the locale does not exist (e.g. `en_US.json`),
+  default `true`.
+
+### y18n.\_\_(str, arg, arg, arg)
+
+Print a localized string, `%s` will be replaced with `arg`s.
+
+### y18n.\_\_n(singularString, pluralString, count, arg, arg, arg)
+
+Print a localized string with appropriate pluralization. If `%d` is provided
+in the string, the `count` will replace this placeholder.
+
+### y18n.setLocale(str)
+
+Set the current locale being used.
+
+### y18n.getLocale()
+
+What locale is currently being used?
+
+### y18n.updateLocale(obj)
+
+Update the current locale with the key value pairs in `obj`.
+
+## License
+
+ISC
+
+[travis-url]: https://travis-ci.org/yargs/y18n
+[travis-image]: https://img.shields.io/travis/yargs/y18n.svg
+[coveralls-url]: https://coveralls.io/github/yargs/y18n
+[coveralls-image]: https://img.shields.io/coveralls/yargs/y18n.svg
+[npm-url]: https://npmjs.org/package/y18n
+[npm-image]: https://img.shields.io/npm/v/y18n.svg
+[standard-image]: https://img.shields.io/badge/code%20style-standard-brightgreen.svg
+[standard-url]: https://github.com/feross/standard