Align social networks plugins.
Create pt version.
Create nl version.
Create spanish version.
Add languages selection.
Add Addy Osmani mention. Add hash to mentions.
#14 Link wasn’t the correct url.
#15 Translation of Addy Osmani mention.
german translation

- added german translation at de/index.html
- added german flag to src/css/data-uri.css
- added german language selector to the other index files
Merge pull request #16 from ReimersJan/gh-pages

german translation
CSS background with one line of CSS.
#18 Portuguese word incorrectly spelled.
Add translations of mentions to spanish.
Fix 'no-images' urls.
#21 Add a temporary fix.
Merge remote-tracking branch 'uptodate/gh-pages' into gh-pages