Add disk usage module

config.sh

@@ -15,4 +15,5 @@
 #module_kernel		"Kernel: "	" | "
 #module_loadavg		"Load Avg.: "	" | "
 #module_weather		"Weather: "	" | "
+#module_du		"Disk Usage: "	" | "
 module_date		"Date: "	""

modules.sh

@@ -37,3 +37,7 @@ module_loadavg() {
 module_weather() {
 	export bar="${bar}${1}$(curl -s 'wttr.in/?format=1' | sed 's/.* //')${2}"
 }
+
+module_du() {
+	export bar="${bar}${1}$(df -T / | awk '{if (NR!=1) {print $6}}')${2}"
+}