added arguments to shortcut and removed installer.lua as it was unnecessary

shortcut.lua

@@ -1 +1,20 @@
-dofile("/home/PowerManager/main.lua")
+local args = {...}
+local helpText = "This is a tool for displaying and managing your Power cells and generators."
+
+
+if #args<1 then
+    dofile("/usr/PowerManager/main.lua")
+    return
+end
+
+if args[1] == "-h" then
+    print(helpText)
+    return
+elseif args[1] == "update" then
+    dofile("/usr/PowerManager/updater.lua")
+    return
+else
+    print('"'..args[1]..'" - Bad argument. you can use: powerman update')
+    print(helpText)
+    return
+end