Added composer.json
Merge branch 'master' of github.com:andru/booty

* 'master' of github.com:andru/booty: (26 commits)
  Fix for Safari 7 flexbox.
  Fix for navbar insertion order.
  Only define flexbox for media:screen. Fixes print cropping bug in FF.
  Append and prepend to footer zones.
  Move navbar to 'before:lower-container' zone.
  Added firstHeading class to main title for compatibility with Vector.
  Added viewport tag.
  Small adjustment for nav top margin.
  Added meta-viewport tag.
  Reduce thumb caption size.
  - Reduced font size of redirect message. - Reduced font size for print - Hid top nag for print
  plainlinks external links now correctly do not show the external link icon.
  Fixing missing ;
  Fixed flex box layout. Now using .flexbox() mixins.
  Show the navbar menu element even if there's no menu items. Since it's the item with flex-grow, without it the navbar borks.
  Make breadcrumb zone configurable.
  Fixes to header.
  Added globe icon to external links
  - Special pages columns now adapt to screen resolution. - Basic styling for the TOC
  Fixed broken webfonts
  ...