removed draw.c, implemented C-w handling (backward word deletion)

dmenu.1

@@ -90,6 +90,9 @@ Remove enough characters from the input field to change its filtering effect.
 .TP
 .B Control-u
 Remove all characters from the input field.
+.TP
+.B Control-w
+Remove all characters of current word from the input field.
 .SH SEE ALSO
 .BR dwm (1),
 .BR wmii (1) .