Added FAQ
Added link to FAQ in menu
Added images for article 'How Freicoin works'
Added article 'How Freicoin works'
Added link to 'How Freicoin works' in menu
Merge pull request #18 from r000n/staging

Staging - FAQ and short explanation

Thank you again r000n, it looks good. And as you say, we can always make corrections later. But we didn't had anything on the foundation, for example, which is something important. I'm merging it. If maaku wants to make some corrections I think he can before it is deployed.
 After we have a more or less stable page, we could consider to use transifex for it too.