Meteor OAuth2 login service with Douban

Usage:

Install Meteor.
meteor add service-configuration
Apply for douban API key. For local test, please maintain the following callback path:
```
  http://127.0.0.1:3000/_oauth/douban
```

Provide douban api key, secret and configuratons on server code, e.g.

  ServiceConfiguration.configurations.remove({service: 'douban'});
  ServiceConfiguration.configurations.upsert(
    {service: 'douban'},
    {
      $set: {
        clientId: DOUBAN_API_KEY,
        secret: DOUBAN_SECRET,
        loginStyle: 'redirect',
        replaceLocalhost: true 
      }
    }
  );

meteor add theycallmek:accounts-douban, this will essentially install both accounts-douban and douban packages.

Play with function loginWithDouban in client code, e.g.

  Meteor.loginWithDouban(/*options*/, /*callback function*/);

Enjoy!

Reference:

Douban OAuth2 doc.
Meteor loginWith<ExternalService>.

Note:

Current design follows other Meteor oauth services, which is highly coupled with Meteor package oauth and oauth2.

TO-DO:

Different client(other than desktop) implementations.

lyslim/accounts-douban

Meteor OAuth2 login service with Douban