auto-display the InfoWindow

[xiabin1235910]

Hi, leftstick
I suggest to add a new small feature about auto-display the InfoWindow.
For now, I find that only after clicking the marker, the InfoWindow appears.

So how about the follow?

        // add default behavior...
        if(marker.auto_display) {
            marker2.openInfoWindow(infoWindow2);
        }

[leftstick]

Nice feature, i will consider to add it in next release

[zzpmaster]

Good idea。

[leftstick]

Please upgrade to 2.4.0