Add notify-send manpage
Taken from Debian, converted to Docbook and fixed some issues.
Original Debian manpage
Newly created page
Closes: #4 (closed)
cc @teto
Edited by Jan Tojnar
Taken from Debian, converted to Docbook and fixed some issues.
Original Debian manpage
Newly created page
Closes: #4 (closed)
cc @teto