- New react node for reacting to messages

- made input and output nodes more compatible with each other (for relay purposes).
- File/Image input nodes can be combined with a File In node now
- Remove console.log debug lines
- set version to 0.0.3
- send message node updated to handle message formats and types.
- Fixed ignore properties on matrix receive node not saving
- created basic readme
- WIP on node docs

src/matrix-react.js

@@ -0,0 +1,78 @@
+module.exports = function(RED) {
+    function MatrixReact(n) {
+        RED.nodes.createNode(this, n);
+
+        var node = this;
+
+        this.name = n.name;
+        this.server = RED.nodes.getNode(n.server);
+        this.roomId = n.roomId;
+
+        if (!node.server) {
+            node.warn("No configuration node");
+            return;
+        }
+
+        node.status({ fill: "red", shape: "ring", text: "disconnected" });
+
+        node.server.on("disconnected", function(){
+            node.status({ fill: "red", shape: "ring", text: "disconnected" });
+        });
+
+        node.server.on("connected", function() {
+            node.status({ fill: "green", shape: "ring", text: "connected" });
+        });
+
+        node.on("input", function (msg) {
+            if (!node.server || !node.server.matrixClient) {
+                node.error("No matrix server selected");
+                return;
+            }
+
+            if(!node.server.isConnected()) {
+                node.error("Matrix server connection is currently closed");
+                node.send([null, msg]);
+            }
+
+            msg.roomId = node.roomId || msg.roomId;
+            if(!msg.roomId) {
+                node.error("Room must be specified in msg.roomId or in configuration");
+                return;
+            }
+
+            if(!msg.payload) {
+                node.error('msg.payload is required');
+                return;
+            }
+
+            let eventId = msg.referenceEventId || msg.eventId;
+            if(!eventId) {
+                node.error('Either msg.referenceEventId or msg.eventId must be defined to react to a message.');
+                return;
+            }
+
+            node.server.matrixClient.sendCompleteEvent(
+                msg.roomId,
+                {
+                    type: 'm.reaction',
+                    content: {
+                        "m.relates_to": {
+                            event_id: eventId,
+                            key: msg.payload,
+                            rel_type: "m.annotation"
+                        }
+                    }
+                }
+            )
+                .then(function(e) {
+                    msg.eventId = e.event_id;
+                    node.send([msg, null]);
+                })
+                .catch(function(e){
+                    msg.error = e;
+                    node.send([null, msg]);
+                });
+        });
+    }
+    RED.nodes.registerType("matrix-react", MatrixReact);
+}