example: create calculator server app

Change-Id: Ie2ad4ff00208056c48c0d596053b20b82f1fb3a1
Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
diff --git a/configure.ac b/configure.ac
index 493ca4f..d2156ab 100644
--- a/configure.ac
+++ b/configure.ac
@@ -86,6 +86,7 @@
 
 # Create configured output
 AC_CONFIG_FILES([Makefile test/Makefile tools/Makefile tools/setup.py])
+AC_CONFIG_FILES([example/Makefile])
 AC_CONFIG_FILES([sdbusplus.pc])
 AC_CONFIG_FILES([sdbusplus/bus.hpp])
 AC_CONFIG_FILES([sdbusplus/server.hpp])