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/octokit-pagination-methods/lib/get-page.js

@@ -0,0 +1,38 @@
+module.exports = getPage
+
+const deprecate = require('./deprecate')
+const getPageLinks = require('./get-page-links')
+const HttpError = require('./http-error')
+
+function getPage (octokit, link, which, headers) {
+  deprecate(`octokit.get${which.charAt(0).toUpperCase() + which.slice(1)}Page() – You can use octokit.paginate or async iterators instead: https://github.com/octokit/rest.js#pagination.`)
+  const url = getPageLinks(link)[which]
+
+  if (!url) {
+    const urlError = new HttpError(`No ${which} page found`, 404)
+    return Promise.reject(urlError)
+  }
+
+  const requestOptions = {
+    url,
+    headers: applyAcceptHeader(link, headers)
+  }
+
+  const promise = octokit.request(requestOptions)
+
+  return promise
+}
+
+function applyAcceptHeader (res, headers) {
+  const previous = res.headers && res.headers['x-github-media-type']
+
+  if (!previous || (headers && headers.accept)) {
+    return headers
+  }
+  headers = headers || {}
+  headers.accept = 'application/vnd.' + previous
+    .replace('; param=', '.')
+    .replace('; format=', '+')
+
+  return headers
+}