Update web handling

web/server.go

@@ -6,9 +6,10 @@ import (
 )
 
 func StartServer() {
-	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
-		fmt.Fprintf(w, "Barcodes")
-	})
+	// What I want to do here is server from /static
+	// if the resource exists, else try to render from /templates
+	// if the template exists.  Else return 404.
+	http.HandleFunc("/", mainHandler)
 
 	http.HandleFunc("/help", helpTemplate)