Add some documentation.

Signed-off-by: Peter Jones <pjones@redhat.com>
Improve verbosity on filetype guessing.

Signed-off-by: Peter Jones <pjones@redhat.com>
Make "dbxtool -d DBXupdate.bin -l" work.

Signed-off-by: Peter Jones <pjones@redhat.com>
Bump version to 0.3

Signed-off-by: Peter Jones <pjones@redhat.com>