Move all nodes into core subdirectory

This makes it easier to distinguish core nodes from those added later

nodes/core/io/23-watch.html

@@ -0,0 +1,53 @@
+<!--
+  Copyright 2013 IBM Corp.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+-->
+
+<script type="text/x-red" data-template-name="watch">
+    <div class="form-row node-input-filename">
+         <label for="node-input-files"><i class="icon-file"></i> File(s)</label>
+         <input type="text" id="node-input-files" placeholder="File(s) or Directory">
+    </div>
+    <div class="form-row">
+        <label for="node-input-name"><i class="icon-tag"></i> Name</label>
+        <input type="text" id="node-input-name" placeholder="Name">
+    </div>
+</script>
+
+<script type="text/x-red" data-help-name="watch">
+	<p>Watches a file or directory for any changes.</p>
+	<p>You can enter a list of comma separated files, or directories if you like. You will need to put " around any that have spaces in.</p>
+	<p>The filename of the file that actually changed is put into <b>msg.payload</b>, while a stringified version of the watched criteria is returned in <b>msg.topic</b>.</p>
+	<p>Of course in Linux, <i>everything</i> could be a file and thus watched...</p>
+</script>
+
+<script type="text/javascript">
+    RED.nodes.registerType('watch',{
+        category: 'advanced-input',
+        defaults: {
+            name: {value:""},
+            files: {value:"",required:true}
+        },
+        color:"BurlyWood",
+        inputs:0,
+        outputs:1,
+        icon: "watch.png",
+        label: function() {
+            return this.name||this.files;
+        },
+        labelStyle: function() {
+            return this.name?"node_label_italic":"";
+        }
+    });
+</script>