Needed png/svg rendering, merged some code
floating around in a modular, optional way.
fix typo in README
improve example readability
Merge branch 'master' of git://github.com/nofxx/rqrcode
more merges
enhance as_png
start minimal viable version
first pass at detecting minimum version size, need to enter in more data, then going to rework as_png logic
resizing goodness
remove side_length
require exporters
proper constraints
Merge branch 'master' of git://github.com/bjornblomqvist/rqrcode

Conflicts:
	lib/rqrcode/qrcode/qr_code.rb
fixes