Ghost/ghost/admin/initializers/authentication.js

var AuthenticationInitializer = {

    name: 'authentication',
    before: 'simple-auth',
    after: 'registerTrailingLocationHistory',

    initialize: function (container) {
        window.ENV = window.ENV || {};
        window.ENV['simple-auth'] = {
            authenticationRoute: 'signin',
            routeAfterAuthentication: 'content',
            authorizer: 'simple-auth-authorizer:oauth2-bearer'
        };
        SimpleAuth.Session.reopen({
            user: function () {
                return container.lookup('store:main').find('user', 'me');
            }.property()
        });
        SimpleAuth.Authenticators.OAuth2.reopen({
            serverTokenEndpoint: '/ghost/api/v0.1/authentication/token',
            refreshAccessTokens: true,
            makeRequest: function (url, data) {
                data.client_id = 'ghost-admin';
                return this._super(url, data);
            }
        });
    }
};

export default AuthenticationInitializer;