Test rename: 3 cells in a row are called a blinker.
Adds BoardReader class.
Introduces Board.boundingBox
Adds BoardPrinter.
Refactors code in BoardReader.

Hey, were you still using Scala 2.7 collections?
Adds the toad oscillator example.
Adds a blinker board.
Makes the Toad example runner generic and adds a Blinker example.
Consistently use BDD test (example) names.