GoogleOauth2.0 First implementation

First try for GoogleOauth2.0

express-server/node_modules/passport-google-oauth20/README.md

@@ -0,0 +1,123 @@
+# passport-google-oauth20
+
+[![Build](https://img.shields.io/travis/jaredhanson/passport-google-oauth2.svg)](https://travis-ci.org/jaredhanson/passport-google-oauth2)
+[![Coverage](https://img.shields.io/coveralls/jaredhanson/passport-google-oauth2.svg)](https://coveralls.io/r/jaredhanson/passport-google-oauth2)
+[![Quality](https://img.shields.io/codeclimate/github/jaredhanson/passport-google-oauth2.svg?label=quality)](https://codeclimate.com/github/jaredhanson/passport-google-oauth2)
+[![Dependencies](https://img.shields.io/david/jaredhanson/passport-google-oauth2.svg)](https://david-dm.org/jaredhanson/passport-google-oauth2)
+
+
+[Passport](http://passportjs.org/) strategy for authenticating with [Google](http://www.google.com/)
+using the OAuth 2.0 API.
+
+This module lets you authenticate using Google in your Node.js applications.
+By plugging into Passport, Google authentication can be easily and
+unobtrusively integrated into any application or framework that supports
+[Connect](http://www.senchalabs.org/connect/)-style middleware, including
+[Express](http://expressjs.com/).
+
+## Install
+
+    $ npm install passport-google-oauth20
+
+## Usage
+
+#### Create an Application
+
+Before using `passport-google-oauth20`, you must register an application with
+Google.  If you have not already done so, a new project can be created in the
+[Google Developers Console](https://console.developers.google.com/).
+Your application will be issued a client ID and client secret, which need to be
+provided to the strategy.  You will also need to configure a redirect URI which
+matches the route in your application.
+
+#### Configure Strategy
+
+The Google authentication strategy authenticates users using a Google account
+and OAuth 2.0 tokens.  The client ID and secret obtained when creating an
+application are supplied as options when creating the strategy.  The strategy
+also requires a `verify` callback, which receives the access token and optional
+refresh token, as well as `profile` which contains the authenticated user's
+Google profile.  The `verify` callback must call `cb` providing a user to
+complete authentication.
+
+    var GoogleStrategy = require('passport-google-oauth20').Strategy;
+
+    passport.use(new GoogleStrategy({
+        clientID: GOOGLE_CLIENT_ID,
+        clientSecret: GOOGLE_CLIENT_SECRET,
+        callbackURL: "http://www.example.com/auth/google/callback"
+      },
+      function(accessToken, refreshToken, profile, cb) {
+        User.findOrCreate({ googleId: profile.id }, function (err, user) {
+          return cb(err, user);
+        });
+      }
+    ));
+
+#### Authenticate Requests
+
+Use `passport.authenticate()`, specifying the `'google'` strategy, to
+authenticate requests.
+
+For example, as route middleware in an [Express](http://expressjs.com/)
+application:
+
+    app.get('/auth/google',
+      passport.authenticate('google', { scope: ['profile'] }));
+
+    app.get('/auth/google/callback', 
+      passport.authenticate('google', { failureRedirect: '/login' }),
+      function(req, res) {
+        // Successful authentication, redirect home.
+        res.redirect('/');
+      });
+
+## Examples
+
+Developers using the popular [Express](http://expressjs.com/) web framework can
+refer to an [example](https://github.com/passport/express-4.x-facebook-example)
+as a starting point for their own web applications.  The example shows how to
+authenticate users using Facebook.  However, because both Facebook and Google
+use OAuth 2.0, the code is similar.  Simply replace references to Facebook with
+corresponding references to Google.
+
+## Contributing
+
+#### Tests
+
+The test suite is located in the `test/` directory.  All new features are
+expected to have corresponding test cases.  Ensure that the complete test suite
+passes by executing:
+
+```bash
+$ make test
+```
+
+#### Coverage
+
+The test suite covers 100% of the code base.  All new feature development is
+expected to maintain that level.  Coverage reports can be viewed by executing:
+
+```bash
+$ make test-cov
+$ make view-cov
+```
+
+## Support
+
+#### Funding
+
+This software is provided to you as open source, free of charge.  The time and
+effort to develop and maintain this project is dedicated by [@jaredhanson](https://github.com/jaredhanson).
+If you (or your employer) benefit from this project, please consider a financial
+contribution.  Your contribution helps continue the efforts that produce this
+and other open source software.
+
+Funds are accepted via [PayPal](https://paypal.me/jaredhanson), [Venmo](https://venmo.com/jaredhanson),
+and [other](http://jaredhanson.net/pay) methods.  Any amount is appreciated.
+
+## License
+
+[The MIT License](http://opensource.org/licenses/MIT)
+
+Copyright (c) 2012-2016 Jared Hanson <[http://jaredhanson.net/](http://jaredhanson.net/)>