early work on supporting multiple files

wwwroot/js/site.js

@@ -1,4 +1,6 @@
-let connection = new signalR.HubConnectionBuilder()
+const noteName = document.location.pathname.substring(1);
+
+let connection = new signalR.HubConnectionBuilder()
     .withAutomaticReconnect()
     .withUrl("/noteHub")
     .build();
@@ -29,7 +31,7 @@ function saveContent($textarea) {
 
     var content = $textarea.val();
 
-    connection.invoke('SaveNote', content).then(function () {
+    connection.invoke('SaveNote', content, noteName).then(function () {
         showToast('#saved-indicator');
     }).catch(function (err) {
         console.error(err.toString());