Add a simple Makefile

Makefile

+PORT?=8008
+
+install:
+	sensible-browser "https://github.com/nicolargo/glances#installation"
+
+test:
+	./unitest-all.sh
+
+docs:
+	cd docs && ./build.sh
+
+docs-server: docs
+	(sleep 2 && sensible-browser "http://localhost:$(PORT)") &
+	cd docs/_build/html/ && python -m SimpleHTTPServer $(PORT)
+
+.PHONY: test docs docs-server

docs/man/glances.1

 .\" Man page generated from reStructuredText.
 .
-.TH "GLANCES" "1" "Dec 23, 2018" "3.1.0_beta" "Glances"
+.TH "GLANCES" "1" "Dec 27, 2018" "3.1.0_beta" "Glances"
 .SH NAME
 glances \- An eye on your system
 .
@@ -569,6 +569,7 @@ have a section. Below an example for the CPU plugin:
 .nf
 .ft C
 [cpu]
+disable=false
 user_careful=50
 user_warning=70
 user_critical=90