Korean Translation #1
First draft for Korean translation

Revision is required for consistency.
Corrected korean translation link in README.md
Added Regex translation

Merge branch 'master' into feature/korean-translation
README.md is now up-to-date with korean translation list on it.

README_ko_kr.md is not up-to-date with regex route.
Merge pull request #260 from RexK/feature/korean-translation

Korean translation for Doc