text: var router = require('express').Router();
  
  router.use('/', require('./users'))
  router.use('/articles', require('./articles'))
  router.use('/collections', require('./collections'))
  router.use('/about', require('./about'))
  
  router.use(function(err, req, res, next){
    if(err.name === 'ValidationError'){
      return res.status(422).json({
        errors: Object.keys(err.errors).reduce(function(errors, key){
          errors[key] = err.errors[key].message
          return errors
        }, {})
      })
    }
  
    return next(err)
  })
  
  module.exports = router;
  