created test directories
Add print version and digital write unit tests
Merge pull request #35 from mmurdoch/unit-tests

Add print version and digital write unit tests
Merge branch 'unit-tests' into dev
Change unit tests to use ArduinoUnit FakeStream
Merge branch 'dev' of git://github.com/firmata/arduino into dev
Fix issue #36

Includes unit test coverage. Adds an unsetFirmwareVersion() method to
FirmataClass to make unit test independent from other tests.
Merge pull request #41 from mmurdoch/dev

Fixed issue #36 (setFirmwareVersion leaks memory)
commented out unsetFirmwareVersion in Firmata.cpp and commented out test in firmata_test.ino. Renamed pin13strobe to strobeBlinkPin. Blink version only when using default hardware serial.