Added brightness script

Bin/brightness.sh

@@ -0,0 +1,22 @@
+#! /bin/bash
+
+CURRENT=`xrandr --verbose | grep -m 1 -i brightness | cut -f2 -d ' '`
+GAP=0.1
+NEWVALUE=${CURRENT}
+
+case $1 in
+    up)
+        NEWVALUE=`echo "${CURRENT}+${GAP}"|bc -l`
+    ;;
+    down)
+        NEWVALUE=`echo "${CURRENT}-${GAP}"|bc -l`
+    ;;
+    reset)
+        NEWVALUE=1
+    ;;
+    read)
+        echo "${CURRENT}*100/1"|bc
+    ;;
+esac
+
+xrandr --output eDP-1 --brightness ${NEWVALUE}