Added index.html in root for translation 'KO'.
Translated 'index.html' into Korean
Added a profile 'cwdoh'.
Translated top index html into Korean
Added '_ko/fundamentals/getting-started/your-first-multi-screen-site' for translating Korean.
Better Korean expression of 'best practices'.
Copied '_code' into '_ko/.../your-first-multi-screen-site'.
Translated index.markdown of first multiscreen site into Korean.
Translated content.markdown of first multiscreen site into Korean.
Translated index.markdown of getting-started site into Korean.
Translated /getting-started/your-first-multi-screen-site/index.markdown into Korean.
Translated /getting-started/your-first-multi-screen-site/responsive.markdown into Korean.
Removed files in `_code` directory that are unnecessary.
Update _contributors.yaml to resolve merge conflict.
Fixing merge issue on #740 and moving contributor details to the alphabetically correct position
Merge branch 'cwdoh-setup.ko'