Fix google calendar query node documentation. Closes #71.

Author: hindessm

google/calendar.html

@@ -30,11 +30,31 @@
 </script>
 
 <script type="text/x-red" data-help-name="google calendar">
-  <p>Create an entry in a <a href="https://www.google.com/calendar">Google Calendar</a>.</p>
+  <p>Return the next event in a <a href="https://www.google.com/calendar">Google Calendar</a>.</p>
   <p>The incoming message can provide the following properties:
     <ul>
-      <li><b>payload</b> - an object containing the query parameters described in <a href="https://developers.google.com/google-apps/calendar/v3/reference/events/list">event list API documentation</a></li>
-      <li><b>calendar</b> - the calendar to add the event to (optional, defaults to the node calendar property or the users primary calendar)</li>
+      <li><b>payload</b> - a text search string used to select relevant events</li>
+      <li><b>calendar</b> - the calendar to retrieve the event from (optional, defaults to the node calendar property or the users primary calendar)</li>
+    </ul>
+  </p>
+  <p>The message sent from the node will have properties:
+    <ul>
+      <li><b>title</b> - the summary string from the calendar entry</li>
+      <li><b>description</b> - the description from the calendar entry</li>
+      <li><b>location.description</b> - the location string from the calendar entry</li>
+      <li><b>data</b> - the raw event from the google calendar query as described in the <a href="https://developers.google.com/google-apps/calendar/v3/reference/events/list">event list API documentation</a></li>
+      <li><b>payload</b> - an object containing:
+        <ul>
+          <li><b>title</b> - the summary string from the calendar entry</li>
+          <li><b>description</b> - the description from the calendar entry</li>
+          <li><b>location.description</b> - the location string from the calendar entry</li>
+          <li><b>start</b> - Javascript Date of start time - midnight for all day event</li>
+          <li><b>end</b> - Javascript Date of end time - midnight for all day event</li>
+          <li><b>allDayEvent</b> - true if event is an all day event</li>
+          <li><b>creator</b> - object containing name and email properties</li>
+          <li><b>attendees</b> - list of objects containing name and email properties</li>
+        </ul>
+      </li>
     </ul>
   </p>
 </script>