Remove extraneous carriage return character when printing help options

Signed-off-by: Mike Fleetwood <mike.fleetwood@googlemail.com>
Open logfile for append rather than truncate

Signed-off-by: Mike Fleetwood <mike.fleetwood@googlemail.com>
Merge pull request #39 from mfleetwo/smallfixes

Minor cleanup

Signed-off-by: Joachim Nilsson <troglobit@gmail.com>