Default to Today if no date is specified

[lzell]

Email from Mike S:

If you do not specify a day then I expected it to default to "today" but it appears to just swallow the time and return only the message.

For instance, the query "Do some stuff at 1300" returns:

<?xml version="1.0" encoding="UTF-8"?>
<naturalinputsResponse>
  <message>Do some stuff</message>
</naturalinputsResponse>

But I expected something like this:

<?xml version="1.0" encoding="UTF-8"?>
<naturalinputsResponse>
  <message>Do some stuff</message>
  <occurrence>
    <type>single</type>
    <start_date>20110321</start_date>
    <start_time>13:00:00</start_time>
  </occurrence>
</naturalinputsResponse>