Demonstrate use of object as borderWidth.

examples/setting-options.html

@@ -60,7 +60,13 @@ $(function () {
 			tickDecimals: 3
 		},
 		grid: {
-			backgroundColor: { colors: [ "#fff", "#eee" ] }
+			backgroundColor: { colors: [ "#fff", "#eee" ] },
+			borderWidth: {
+				top: 1,
+				right: 1,
+				bottom: 2,
+				left: 2
+			}
 		}
 	});
 });