Add auth support (#21)

* Updates

* Update

* Update

* Update

* Update

* Yarn sometimes prefers npmrc, so use same token

* Description

* Update readme

* Feedback

* Add type

* new toolkit and scoped registries

* npmrc in RUNNER_TEMP

* Dont always auth

* Try exporting blank token

* Get auth working for now pending runner changes

* Fix string interpolation for auth token.

* Don't export both userconfigs

* Update authutil.js

* Add single quotes for authString

* Fix the registry string.

* Use userconfig and append trailing slash

* Keep in root of repo

* Try just adding auth token

* Remove auth token

* Try changes again

* Add tests

* Npm and GPR samples

* Add types

node_modules/macos-release/index.js

@@ -0,0 +1,32 @@
+'use strict';
+const os = require('os');
+
+const nameMap = new Map([
+	[19, 'Catalina'],
+	[18, 'Mojave'],
+	[17, 'High Sierra'],
+	[16, 'Sierra'],
+	[15, 'El Capitan'],
+	[14, 'Yosemite'],
+	[13, 'Mavericks'],
+	[12, 'Mountain Lion'],
+	[11, 'Lion'],
+	[10, 'Snow Leopard'],
+	[9, 'Leopard'],
+	[8, 'Tiger'],
+	[7, 'Panther'],
+	[6, 'Jaguar'],
+	[5, 'Puma']
+]);
+
+const macosRelease = release => {
+	release = Number((release || os.release()).split('.')[0]);
+	return {
+		name: nameMap.get(release),
+		version: '10.' + (release - 4)
+	};
+};
+
+module.exports = macosRelease;
+// TODO: remove this in the next major version
+module.exports.default = macosRelease;