Added exposure option.
Merge pull request #26 from arpg/feature/exposure-control-dc1394

Added exposure option.
Sensorviewer now has printout for encoder and posys data.
Logtool now logs all message types, and handles buffer overruns in logger.
Adds a more verbose sleep command.
Merge pull request #27 from arpg/fix/logtool-msg-types

Fix/logtool msg types
Merge branch 'fix/filereaderdriver_missing_images'
Tidies up FileReaderDriver.
Makes SensorViewer play in realtime and not play on start.
Fixes indentation in CsvDriver.