replace jest with ava

node_modules/time-zone/readme.md

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+# time-zone [![Build Status](https://travis-ci.org/sindresorhus/time-zone.svg?branch=master)](https://travis-ci.org/sindresorhus/time-zone)
+
+> Pretty [time zone](https://en.wikipedia.org/wiki/Time_zone): `+2` or `-9:30`
+
+
+## Install
+
+```
+$ npm install --save time-zone
+```
+
+
+## Usage
+
+```js
+const timeZone = require('time-zone');
+
+// current time zone (in Norway)
+timeZone();
+//=> '+2'
+
+// time zone in February (in Norway)
+timeZone(new Date(2016, 1, 1));
+//=> '+1'
+
+// current time zone (in French Polynesia)
+timeZone();
+//=> '-9:30'
+```
+
+
+## API
+
+### timeZone([date])
+
+#### date
+
+Type: `Date`<br>
+Default: `new Date()`
+
+Custom date.
+
+
+## License
+
+MIT © [Sindre Sorhus](https://sindresorhus.com)