Squashed '3_ArduinoBasics/' changes from 3448f8a..67b167a

67b167a Update readme.md

git-subtree-dir: 3_ArduinoBasics
git-subtree-split: 67b167a04517d0234c1e4adaadf4ddba79abff0e
updated subtree 3_ArduinoBasics 2013.06.22.20.21