- Convert examples list examples/README.md to use collapsable github sections

- Add another example for sending an uploading file to a room
- Add form tip for Send Message node's thread reply config option

examples/paginate-room-history.json

@@ -15,9 +15,9 @@
       "973dd418b00172c8",
       "3edbea9403d7c347"
     ],
-    "x": 754,
+    "x": 854,
     "y": 1339,
-    "w": 932,
+    "w": 832,
     "h": 182
   },
   {
@@ -113,7 +113,7 @@
     "once": false,
     "onceDelay": 0.1,
     "topic": "!example:skylar.tech",
-    "x": 900,
+    "x": 1000,
     "y": 1480,
     "wires": [
       [