Add the github-linguist package

This commit only adds a single package and all of its transitive
dependencies. The github-linguist package will be used for counting
lines of code as a baseline for databases we are analyzing.

node_modules/slash2/index.js

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+'use strict';
+module.exports = input => {
+	const isExtendedLengthPath = /^\\\\\?\\/.test(input);
+
+	if (isExtendedLengthPath) {
+		return input;
+	}
+
+	return input.replace(/\\/g, '/');
+};

node_modules/slash2/license

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+MIT License
+
+Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

node_modules/slash2/package.json

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+{
+  "name": "slash2",
+  "version": "2.0.0",
+  "description": "Convert Windows backslash paths to slash paths",
+  "license": "MIT",
+  "repository": "sorrycc/slash2",
+  "author": {
+    "name": "Sindre Sorhus",
+    "email": "sindresorhus@gmail.com",
+    "url": "sindresorhus.com"
+  },
+  "engines": {
+    "node": ">=6"
+  },
+  "scripts": {
+    "test": "xo && ava"
+  },
+  "files": [
+    "index.js"
+  ],
+  "keywords": [
+    "path",
+    "seperator",
+    "sep",
+    "slash",
+    "backslash",
+    "windows",
+    "win"
+  ],
+  "devDependencies": {
+    "ava": "*",
+    "xo": "*"
+  }
+}

node_modules/slash2/readme.md

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+# slash [![Build Status](https://travis-ci.org/sindresorhus/slash.svg?branch=master)](https://travis-ci.org/sindresorhus/slash)
+
+> Convert Windows backslash paths to slash paths: `foo\\bar` ➔ `foo/bar`
+
+[Forward-slash paths can be used in Windows](http://superuser.com/a/176395/6877) as long as they're not extended-length paths and don't contain any non-ascii characters.
+
+This was created since the `path` methods in Node outputs `\\` paths on Windows.
+
+
+## Install
+
+```
+$ npm install slash
+```
+
+
+## Usage
+
+```js
+const path = require('path');
+const slash = require('slash');
+
+const str = path.join('foo', 'bar');
+// Unix    => foo/bar
+// Windows => foo\\bar
+
+slash(str);
+// Unix    => foo/bar
+// Windows => foo/bar
+```
+
+
+## API
+
+### slash(path)
+
+Type: `string`
+
+Accepts a Windows backslash path and returns a slash path.
+
+
+## License
+
+MIT © [Sindre Sorhus](https://sindresorhus.com)