title: Trying to remove or Change the icon of default markers of <agm-direction> in angular google maps
body: <p>I am implementing the angular google maps where I am getting pickup and destination location from user and displaying the direction through <code>&lt;agm-direction&gt;</code> in angular google maps. I have displayed the marker for origin and destination on maps but after implementing the <code>&lt;agm-direction&gt;</code> it started displaying the default markers 'A' and 'B'. I want to either remove these markers from map or change the default icons from 'A' and 'B' to some other icon.</p>
  
  <pre><code>
  &lt;agm-map id="map" [latitude]='lat' [longitude]='lng' (mapReady)="addMarker()" [zoom]='zoom'&gt;
      &lt;agm-marker [iconUrl]="curicon" [latitude]="lat" [longitude]="lng"&gt;&lt;/agm-marker&gt;
      &lt;agm-marker [iconUrl]="desticon" [latitude]="latitude" [longitude]="longitude"&gt;&lt;/agm-marker&gt;
      &lt;agm-direction [origin]="origin" [destination]="destination" &gt;
      &lt;/agm-direction&gt;
  &lt;/agm-map&gt;
  
  ts code :
  public origin: {lat :30.7224576,lng:76.6984192};
  public destination: {lat:30.7134158,lng:76.71059969999999};
  public curicon="http://www.google.com/intl/en_us/mapfiles/ms/micons/blue-dot.png";
  public desticon="http://www.google.com/intl/en_us/mapfiles/ms/micons/red-dot.png";
  </code></pre>