Tokaido is the new and shiny project that makes Ruby on OSX easy :) It was originally funded by a Kickstarter project, and is almost done! These stickers are limited edition. Which is to say, we printed only one run, to send to all the Kickstarter supporters. We ended up with a few extras, so these are them. May as well make use of them! Future batches won't include the limited edition "Backer" text.