GoogleOauth2.0 First implementation

First try for GoogleOauth2.0

express-server/node_modules/google-p12-pem/README.md

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+# google-p12-pem
+
+[![NPM Version][npm-image]][npm-url]
+[![Build Status][travis-image]][travis-url]
+[![Dependency Status][david-image]][david-url]
+[![devDependency Status][david-dev-image]][david-dev-url]
+[![Known Vulnerabilities][snyk-image]][snyk-url]
+[![Greenkeeper badge](https://badges.greenkeeper.io/google/google-p12-pem.svg)](https://greenkeeper.io/)
+
+Convert Google `.p12` keys to `.pem` keys.
+
+## Installation
+
+``` sh
+npm install google-p12-pem
+```
+
+## Usage
+
+### async/await style
+```js
+const {getPem} = require('google-p12-pem');
+async function foo() {
+  const pem = await getPem('/path/to/key.p12');
+  console.log(pem); // '-----BEGIN RSA PRIVATE KEY-----\nMIICXQIBAAK...'
+}
+```
+
+### promise style
+```js
+const {getPem} = require('google-p12-pem');
+getPem('/path/to/key.p12')
+  .then(pem => {
+    console.log(pem); // '-----BEGIN RSA PRIVATE KEY-----\nMIICXQIBAAK...'
+  })
+  .catch(err => {
+    console.error(err); // :(
+  });
+
+```
+
+### callback style
+```js
+const {getPem} = require('google-p12-pem');
+getPem('/path/to/key.p12', function(err, pem) {
+  console.log(pem); // '-----BEGIN RSA PRIVATE KEY-----\nMIICXQIBAAK...'
+});
+```
+
+### CLI style
+
+``` sh
+gp12-pem myfile.p12 > output.pem
+```
+
+## License
+[MIT](LICENSE)
+
+[david-image]: https://david-dm.org/google/google-p12-pem.svg
+[david-url]: https://david-dm.org/google/google-p12-pem
+[david-dev-image]: https://david-dm.org/google/google-p12-pem/dev-status.svg
+[david-dev-url]: https://david-dm.org/google/google-p12-pem?type=dev
+[npm-image]: https://img.shields.io/npm/v/google-p12-pem.svg
+[npm-url]: https://www.npmjs.com/package/google-p12-pem
+[snyk-image]: https://snyk.io/test/github/google/google-p12-pem/badge.svg
+[snyk-url]: https://snyk.io/test/github/google/google-p12-pem
+[travis-image]: https://travis-ci.org/google/google-p12-pem.svg?branch=master
+[travis-url]: https://travis-ci.org/google/google-p12-pem