added brightnurrs - needs testing on laptop

src/util/brightnurrs.nim

@@ -57,11 +57,15 @@ proc brightnessDown() =
   discard execCmd(cmd)
 
 proc getBrightness*(backlight: string) =
+  var data = newInfo("Brightnurrs")
+  if backlight == "":
+    data.full_text = "No Backlight Found"
+    discard outputData(data)
+    quit(1)
   let limit = getLimit(backlight)
   let current = parseInt(strip(readFile("/sys/class/backlight/" & backlight & "/actual_brightness")))
   let pcnt = (current/limit)*100
   let text = getDesign(pcnt)
-  var data = newInfo("Brightnurrs")
   data.full_text = text
   let args = @["up", "down"]
   let option = outputData(data,args)
@@ -84,14 +88,11 @@ proc getBrightness*(backlight: string) =
 
 proc go*() =
   let backlight = getBacklight()
-  if backlight != "":
-    let barg = parseBrightnessArgs()
-    case barg:
-      of BrightUp:
-        brightnessUp()
-      of BrightDown:
-        brightnessDown()
-      else:
-        backlight.getBrightness()
-  else:
-    echo "No Backlight Found"
+  let barg = parseBrightnessArgs()
+  case barg:
+    of BrightUp:
+      brightnessUp()
+    of BrightDown:
+      brightnessDown()
+    else:
+      backlight.getBrightness()