Add initial osmo-remsim usermanual

Change-Id: I1d9231b24b1481afcbb5758662b7d99bd59e7fdb
diff --git a/doc/manuals/Makefile.am b/doc/manuals/Makefile.am
new file mode 100644
index 0000000..36ca4f2
--- /dev/null
+++ b/doc/manuals/Makefile.am
@@ -0,0 +1,12 @@
+EXTRA_DIST = \
+    osmo-remsim-usermanual.adoc \
+    osmo-remsim-usermanual-docinfo.xml \
+    chapters
+
+if BUILD_MANUALS
+  ASCIIDOC = osmo-remsim-usermanual.adoc
+  include $(OSMO_GSM_MANUALS_DIR)/build/Makefile.asciidoc.inc
+  osmo-remsim-usermanual.pdf: $(srcdir)/chapters/*.adoc
+
+  include $(OSMO_GSM_MANUALS_DIR)/build/Makefile.common.inc
+endif