Add support for code resource

Makefile.am

@@ -307,6 +307,8 @@ $(prefix)/src:
 	@chmod -R 775 $(prefix)/src
 
 index: weather library template
+	@echo Updating file index...
+	@git ls-files | grep -v '^\.' > index
 
 html-local: module-html developer-html troubleshooting-html
 	@mkdir -p $(prefix)/share/doc/developer