Firebase Update

express-server/node_modules/arrify/readme.md

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+# arrify [![Build Status](https://travis-ci.org/sindresorhus/arrify.svg?branch=master)](https://travis-ci.org/sindresorhus/arrify)
+
+> Convert a value to an array
+
+
+## Install
+
+```
+$ npm install --save arrify
+```
+
+
+## Usage
+
+```js
+const arrify = require('arrify');
+
+arrify('unicorn');
+//=> ['unicorn']
+
+arrify(['unicorn']);
+//=> ['unicorn']
+
+arrify(null);
+//=> []
+
+arrify(undefined);
+//=> []
+```
+
+*Supplying `null` or `undefined` results in an empty array.*
+
+
+## License
+
+MIT © [Sindre Sorhus](http://sindresorhus.com)