I have a module in rails project on `app/lib/md.rb` and I want to import and use it in a rake task outside of application scope under `lib/task` directory. the `app` and `lib` folders are in same directory, in the other work it's like below:

```
- app
  - lib
    - md.rb
- lib
  - task

```

my module is just couple of class and my rake task is like below:

```
include Md

task :import_product do
    puts ''
    puts '=================='
    puts 'Started Fetching Products'
    puts '=================='
...
end

```