var fbuser = require('botkit-middleware-fbuser')({
    accessToken:'<fb_access_token>',
    fields: ['first_name', 'last_name', 'locale', 'profile_pic','timezone','gender','is_payment_enabled'],
    logLevel:'error',
    expire: 24 * 60 * 60 * 1000, // refresh profile info every 24 hours
    storage: '<Botkit storage object>'
});


controller.middleware.receive.use(fbuser.receive)