Update README.md

README.md

@@ -23,9 +23,9 @@ All functions read JSON formatted parameters
   notify():
   {
       "group": "groupname",
-      // style and icon-style are optional
-      // item can have text and/or icon
-      // item can have click action "signal" or "delete"
+      // item can have text and/or icon, other are optional
+      // click action can be : "signal" or "delete"
+      // box property can be : "left", "center" or "right"
       "items": [
           {
 	      "name":"",
@@ -34,6 +34,7 @@ All functions read JSON formatted parameters
               "icon-style":"",
 	      "icon":"",
 	      "on-click":"",
+	      "box":"",
           }, ...
       ]
       }