Read me missing some options

[eladnova]

The following are not listed in the Read Me.md but listed in MarkupGoogleMap.module

• // use hover box? When true, shows a tooltip-type box when you hover the marker, populated with the markerTitleField
• // this is often more useful than the default presentation google maps uses
• 'useHoverBox' => false *
• // when useHoverBox is true, you can specify the markup used for it. Use the following (which is the default) as your starting point:
• 'hoverBoxMarkup' => "
  ", *
• // FUll URL to icon file to use for markers. Blank=use default Google marker icon.
• 'icon' => '',
• // Any extra javascript initialization code you want to occur before the map itself is drawn
• 'init' => '',