Start of project

So here's one place you could encapsulate the logic into a method. E.g. something like
```
def save_user_csv_and_get_content(csv)
  csv_content = CSV.read(csv.path)
  csv_name = csv.original_filename
  File.open(Rails.root.join('tmp', 'uploads', csv_name), 'wb') do |file|
    file.write(csv.read)
  end
  return csv_content, csv_name
end
```
and then in this method to call you do:
```
@csv_arr, session[:csv_name] = save_user_csv_and_get_content(params[:csv])