As pointed out by Jan Engelhardt, many files are missing a license notice.
Add the standard license notice to these files.
Signed-off-by: Claudio Matsuoka <cmatsuoka@gmail.com>
COMMAND KEYS SUMMARY
Space Pause/unpause
F, Right Advance to next order
B, Left Return to previous order
N, Up Advance to next module
P, Down Return to previous module
1 - 0 Mute/unmute channels
! Unmute all channels
? Display available commands
m Display module information
i Display instrument list
Signed-off-by: Claudio Matsuoka <cmatsuoka@gmail.com>
Jan Engelhardt
Claudio Matsuoka