deps: update npm to 5.5.1

Closes: https://github.com/nodejs/node/pull/16280

PR-URL: https://github.com/nodejs/node/pull/16509
Fixes: https://github.com/nodejs/node/issues/14161
Reviewed-By: Daijiro Wachi <daijiro.wachi@gmail.com>
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Michaël Zasso <targos@protonmail.com>

1 files changed, 28 insertions, 0 deletions

diff --git a/deps/npm/node_modules/cli-table2/node_modules/string-width/node_modules/is-fullwidth-code-point/node_modules/number-is-nan/readme.md b/deps/npm/node_modules/cli-table2/node_modules/string-width/node_modules/is-fullwidth-code-point/node_modules/number-is-nan/readme.md
new file mode 100644
index 0000000000..2463508712
--- /dev/null
+++ b/deps/npm/node_modules/cli-table2/node_modules/string-width/node_modules/is-fullwidth-code-point/node_modules/number-is-nan/readme.md
@@ -0,0 +1,28 @@
+# number-is-nan [![Build Status](https://travis-ci.org/sindresorhus/number-is-nan.svg?branch=master)](https://travis-ci.org/sindresorhus/number-is-nan)
+
+> ES2015 [`Number.isNaN()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isNaN) [ponyfill](https://ponyfill.com)
+
+
+## Install
+
+```
+$ npm install --save number-is-nan
+```
+
+
+## Usage
+
+```js
+var numberIsNan = require('number-is-nan');
+
+numberIsNan(NaN);
+//=> true
+
+numberIsNan('unicorn');
+//=> false
+```
+
+
+## License
+
+MIT © [Sindre Sorhus](http://sindresorhus.com)