Closes #21

- Can now access the matrix client globally so it can be used in function nodes (this way you are not limited by only the nodes we have published)
- Added example for using the Matrix Client in a function to redact messages. This should be a great example to show people what is possible.

src/matrix-server-config.html

@@ -11,7 +11,8 @@
         defaults: {
             name: { value: null },
             autoAcceptRoomInvites: { value: true },
-            enableE2ee: { type: "checkbox", value: true }
+            enableE2ee: { type: "checkbox", value: true },
+            global: { type: "checkbox", value: true }
         },
         icon: "matrix.png",
         label: function() {
@@ -67,10 +68,24 @@
             Enable end-to-end encryption (requires DeviceID)
         </label>
     </div>
-
     <div class="form-tips" style="margin-bottom: 12px;">
         E2ee requires a Device ID to be set.
     </div>
+
+    <div class="form-row">
+        <input
+                type="checkbox"
+                id="node-config-input-global"
+                style="width: auto; margin-left: 125px; vertical-align: top"
+        />
+        <label for="node-config-input-global" style="width: auto">
+            Global access to Matrix Client
+        </label>
+        <div class="form-tips" style="margin-bottom: 12px;">
+            If enabled this allows you to access the matrix client directly with a Function node. This way you can do whatever you want with the client.<br />
+            Example: <code>let client = global.get("matrixClient['@bot:example.com']")</code>
+        </div>
+    </div>
 </script>
 
 <script type="text/html" data-help-name="matrix-server-config">