Apply Landscape.io

## Before merge
1. Login https://landscape.io/
2. In https://landscape.io/dashboard, "Add Repository"
3. Click amitu/importd, then "Add Repositories"
4. If "Server Error (500)" occur, wait.... In my case, I wait 12 hours.
5. You can access https://landscape.io/github/amitu/importd.
6. Now, you can merge.

## Merge
1. Merge my branch to your master. 
2. modify badge url inside README.rst to your landscape.io badge.

This is example. I apply landscape.io to my repo.
https://landscape.io/github/if1live/importd