Typofix in json.
whitespace fix.
Add images for introduction.
Extension should be .md, not markdown for showoff to pick them up.
Outline for "gebruik" section done.
Override styles.
Mark title slides as such.
Markup for code.
Smaller titles, otherwise they won;t fit
Merge branch 'design'

* design:
  Smaller titles, otherwise they won;t fit
  Markup for code.
  Mark title slides as such.
  Override styles.
Various small spell- and grammar and markup fixes
Merge branch 'master' of github.com:berkes/bitcoin-presentatie

* 'master' of github.com:berkes/bitcoin-presentatie:
  Add imges for introduction.

Conflicts:
	basis/01_slide.md