title: Markers for Google maps not in right spot
body: <p>I have created a google map using the google maps for rails gem. I am using custom svg markers.</p>
  
  <p>The markers are not appearing over the proper location (see Dallas or Chicago in attached image).  </p>
  
  <p>In my controller I have created a hash object. I have tried to adjust the marker's position with the marker_anchor property, but it doesn't appear to have any effect on the position of the image on the map. I also tried using the int 1-9 format or richmarker (ie [1, true]) but this did not work either.</p>
  
  <pre><code>@hash = Gmaps4rails.build_markers(@cities_for_map) do |city, marker|
    marker.lat city.latitude
    marker.lng city.longitude
    marker.picture({
      "url" =&gt; "/images/maps/regular.marker.svg",
      "width" =&gt; 13,
      "height" =&gt; 13,
      "marker_anchor" =&gt; [0, 50]
    })
    marker.infowindow render_to_string(:partial =&gt; "/destinations/map_tile.html", :locals =&gt; { :city =&gt; city})
  end
  </code></pre>
  
  <p>Am I trying to modify the wrong property or is their a bug with the gem? </p>
  
  <p><img src="https://i.stack.imgur.com/Fj1tG.png" alt="enter image description here"></p>