Merge pull request #31 from Mte90/gh-pages

Italian localization and ambient light fix in index.html
Adjust locale code to match Transifex.

Adjust locale code to match Transifex.
revert default locale to en
Update readme with l10n instructions.
use markdown instead of wikitext
move signup link
Merge pull request #32 from christi3k/gh-pages

finalized addition of it_IT locale
Changing heading levels
Added an open Web Activity for video
Merge pull request #33 from fharper/gh-pages

Added an open Web Activity for video
Merge pull request #1 from robnyman/gh-pages

Update fork