old_contents: var AuthController = require('./authController.js');
  
  module.exports = function(router) {
    router.route('/api/auth/signup')
      .post(AuthController.signup);
  
    router.route('/api/auth/login')
      .post(AuthController.login)
  
    router.get('/auth/github', AuthController.authentication);
  
    app.get('/auth/github/callback', AuthController.authenticationCallback);
  
  };
new_contents: var AuthController = require('./authController.js');
  
  module.exports = function(router) {
    router.route('/api/auth/signup')
      .post(AuthController.signup);
  
    router.route('/api/auth/login')
      .post(AuthController.login)
  
    router.get('/auth/github', AuthController.authentication);
  
    router.get('/auth/github/callback', AuthController.authenticationCallback);
  
  };
subject: fix route