Add initial GeoHash node

parsers/geohash/70-geohash.html

@@ -0,0 +1,52 @@
+<!--
+  Copyright 2014 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="geohash">
+    <div class="form-row">
+        <label for="node-input-name"><i class="fa fa-tag"></i> Name</label>
+        <input type="text" id="node-input-name" placeholder="Name">
+    </div>
+</script>
+
+<script type="text/x-red" data-help-name="geohash">
+    <p>A function that encodes lat,lon to and from a geohash.</p>
+    <p>If the <b>msg.payload</b> is a string it tries to see if it's a geohash -
+    if so it tries to decode it and outputs a payload object containing
+    <ul><li>latitude<li>longitude<li>error.latitude<li>error.longitude</ul></p>
+    <p>If the <b>msg.payload</b> is an object with properties lat or latitude and lon or longitude
+    - it will add a <b>geohash</b> property to the payload.</p>
+    <p>The precision can be set by <b>msg.payload.precision</b> from 1 to 9.
+    <p><b>Note:</b> If the msg contains a .location property it will operate on that in preference to the .payload.</p>
+</script>
+
+<script type="text/javascript">
+    RED.nodes.registerType('geohash',{
+        category: 'function',
+        color:"#DEBD5C",
+        defaults: {
+            name: {value:""}
+        },
+        inputs:1,
+        outputs:1,
+        icon: "arrow-in.png",
+        label: function() {
+            return this.name||"geohash";
+        },
+        labelStyle: function() {
+            return this.name?"node_label_italic":"";
+        }
+    });
+</script>