package.json

[Efreak]

• add io.js
• update required npm version
• update package version this time! I completely forgot to do this in npm last time, so leaving notes below...
  • update package.json to 2.2.0 in development.
  • rebase steam-1.0.0 on top of development (should probably be done anyways)
  • merge steam-1.0.0 into development. & delete it.
  • merge development into master.
  • push master to github (there's a couple extra commits for the readme, IIRC). I'll probably forget to rebase first and just force-push, though, so be aware.
  • update package.json to 2.2.0-dev in development.
  • push development to github.
  • release on github from master branch.
  • ~24hours later, release 2.2.0 on npm if no bugs found yet