added makefile for "presence book"

doc/presence/Makefile

@@ -0,0 +1,29 @@
+#
+# The list of documents to build (without extensions)
+#
+DOCUMENTS = presence_book
+
+#
+# The root directory containing Makefile.doc
+#
+ROOT_DIR=../..
+
+#
+# Validate docbook documents before generating output
+# (may be slow)
+#
+#VALIDATE=1
+
+#
+# You can override the stylesheet used to generate
+# xhtml documents here
+#
+#XHTML_XSL=$(ROOT_DIR)/doc/stylesheets/xhtml.xsl
+
+#
+# You can override the stylesheet used to generate
+# plain text documents here
+#
+#TXT_XSL=$(XHTML_XSL)
+
+include $(ROOT_DIR)/Makefile.doc