Merge pull request #30 from caouecs/develop

(dk) Add Danish
Merge pull request #33 from caouecs/develop

Develop -> master
Merge pull request #38 from caouecs/develop

Composer.json
Update to the danish lang-files

Fixed a few typos, improved a few phrases, and tried to get closer to
the "style" of the english version.
Merge pull request #39 from hauthorn/master

Update to DK