Update for Hugo blog

Makefile

@@ -2,11 +2,11 @@
 
 help:
 	@echo "Usage: make <command>"
-	@echo "  hugo    - Export the org files to the Hugo website (~/Sites/website)"
+	@echo "  hugo    - Export the org files to the Hugo website (org-hugo-base-dir)"
 
 hugo:
-	@files=$$(grep -rli --include='*.org' --exclude-dir=.git '^#+hugo_base_dir:' . | sort); \
-	if [ -z "$$files" ]; then echo "No Org file with #+hugo_base_dir found"; exit 1; fi; \
+	@files=$$(grep -rli --include='*.org' --exclude-dir=.git '^#+hugo_section:' . | sort); \
+	if [ -z "$$files" ]; then echo "No Org file with #+hugo_section found"; exit 1; fi; \
 	for f in $$files; do \
 		echo "==> Exporting $$f"; \
 		emacsclient -e "(with-current-buffer (find-file-noselect \"$(CURDIR)/$${f#./}\") (org-hugo-export-wim-to-md))" > /dev/null || exit 1; \