Patch for a Map (#62)

Add map

http/http.go

@@ -222,12 +222,20 @@ func (s *Server) DefaultHandler(w http.ResponseWriter, r *http.Request) *appErro
 	}
 	var data = struct {
 		Response
-		Host string
-		JSON string
-		Port bool
+		Host         string
+		BoxLatTop    float64
+		BoxLatBottom float64
+		BoxLonLeft   float64
+		BoxLonRight  float64
+		JSON         string
+		Port         bool
 	}{
 		response,
 		r.Host,
+		response.Latitude + 0.05,
+		response.Latitude - 0.05,
+		response.Longitude - 0.05,
+		response.Longitude + 0.05,
 		string(json),
 		s.LookupPort != nil,
 	}

index.html

@@ -97,6 +97,12 @@ $ http {{ .Host }}/port/8080
 }</pre>
 {{ end }}
       </div>
+{{ if .City }}
+      <div class="pure-u-1 pure-u-md-1-1">
+          <h2>Map</h2>
+          <iframe width="100%" height="350" frameborder="0" scrolling="no" marginheight="0" marginwidth="0" src="https://www.openstreetmap.org/export/embed.html?bbox={{ .BoxLonLeft }}%2C{{ .BoxLatBottom }}%2C{{ .BoxLonRight }}%2C{{ .BoxLatTop }}&amp;layer=mapnik&amp;marker={{ .Latitude }}%2C{{ .Longitude }}"></iframe>
+      </div>
+{{ end }}
       <div class="pure-u-1 pure-u-md-1-2">
         <h2>FAQ</h2>
         <h3>How do I force IPv4 or IPv6 lookup?</h3>