Added comment with usage example.

src/sbbs3/Makefile.bor

@@ -4,6 +4,8 @@
 # Makefile for Synchronet BBS 											#
 # For use with Borland C++ Builder 5 or Borland C++ 5.5 for Win32       #
 # @format.tab-size 4													#
+#																		#
+# usage: make -f makefile.bor											#
 #########################################################################
 
 # $Id$