add adjuster hello world images

the random algorithm now works on the files that
need to be read for randomly selecting a sample,
as the languages are not the same anymore for
each one of the sequence numbers.
update metafonts adjuster derivations
update metafonts adjuster showcase
update adjuster
shuffle helloworld images
add nyan cat rspec formatter
remove obsolete specs
select dropdown option for stored fonts (url hash)
not beta anymore
sort gemfile