Added vulcanize under third_party/npm_modules

node_modules/vulcanize/node_modules/update-notifier/node_modules/string-length/readme.md

Index: node_modules/vulcanize/node_modules/update-notifier/node_modules/string-length/readme.md
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+# string-length [![Build Status](https://travis-ci.org/sindresorhus/string-length.svg?branch=master)](https://travis-ci.org/sindresorhus/string-length)
+
+> Get the real length of a string - by correctly counting astral symbols and ignoring [ansi escape codes](https://github.com/sindresorhus/strip-ansi)
+
+`String#length` errornously counts [astral symbols](http://www.tlg.uci.edu/~opoudjis/unicode/unicode_astral.html) as two characters.
+
+
+## Install
+
+```sh
+$ npm install --save string-length
+```
+
+```sh
+$ bower install --save string-length
+```
+
+```sh
+$ component install sindresorhus/string-length
+```
+
+
+## Usage
+
+```js
+'𐌢'.length;
+//=> 2
+
+stringLength('𐌢');
+//=> 1
+
+stringLength('\x1b[1municorn\x1b[22m');
+//=> 7
+```
+
+
+## License
+
+MIT © [Sindre Sorhus](http://sindresorhus.com)