code: func (c ImportConverter) Process(r *Runner) error {
  	fmt.Println("~~~ Rewriting Imports ~~~")
  
  	err := filepath.Walk(".", c.processFile)
  	if err != nil {
  		return err
  	}
  
  	if _, err := os.Stat("Gopkg.toml"); err != nil {
  		return nil
  	}
  
  	b, err := ioutil.ReadFile("Gopkg.toml")
  	if err != nil {
  		return err
  	}
  
  	for k := range c.Data {
  		if bytes.Contains(b, []byte(k)) {
  			r.Warnings = append(r.Warnings, fmt.Sprintf("Your Gopkg.toml contains the following import that need to be changed MANUALLY: %s", k))
  		}
  	}
  
  	return nil
  }
docs: // Process will walk all the .go files in an application, excluding ./vendor.
  // It will then attempt to convert any old import paths to any new import paths
  // used by this version Buffalo.