build(docs): Update Makefile to latest and greatest

Author: tony

doc/Makefile

@@ -1,6 +1,7 @@
 # Makefile for Sphinx documentation
 #
-WATCH_FILES= find .. -type f -not -path '*/\.*' | grep -i '.*[.]rst\|CHANGES\|TODO\|.*conf\.py\|.*[.]py$$' 2> /dev/null
+WATCH_FILES= find .. -type f -not -path '*/\.*' | grep -i '.*[.]rst\$\|.*[.].md\|.*[.]py\$\|CHANGES\|TODO\|.*conf\.py' 2> /dev/null
+SHELL := /bin/bash
 PYVERSION=$(shell python -c "import sys;v=sys.version_info[0];sys.stdout.write(str(v))")
 HTTP_PORT     = 8031
 
@@ -165,13 +166,16 @@ watch:
 serve:
 	@echo '=============================================================='
 	@echo
-	@echo 'docs server running at http://0.0.0.0:${HTTP_PORT}/_build/html'
+	@echo 'docs server running at http://localhost:${HTTP_PORT}/'
 	@echo
 	@echo '=============================================================='
 	@if test ${PYVERSION} -eq 2; then $(MAKE) serve_py2; else make serve_py3; fi
 
 serve_py2:
-	python -m SimpleHTTPServer ${HTTP_PORT}
+	pushd _build/html; python2 -m SimpleHTTPServer ${HTTP_PORT}; popd
 
 serve_py3:
-	python -m http.server ${HTTP_PORT}
+	python -m http.server ${HTTP_PORT} --directory _build/html
+
+dev:
+	$(MAKE) -j watch serve