slight changes to SerialPort.h

Signed-off-by: dbw9580 <dbw9580@live.com>
done.

Signed-off-by: dbw9580 <dbw9580@live.com>
Merge branch 'master' of github.com:dbw9580/glowGlass into demo-final

Conflicts:
	demo/main.cpp

Signed-off-by: dbw9580 <dbw9580@live.com>