| Subject: | description is mandatory for add_post |
In README only url is marked as required and you won't get any
interesting error if you only give an url.
Debug was not very interesting either, the reply was :
<?xml version='1.0' standalone='yes'?>
<result code="something went wrong" />
Then I found that description is mandatory.
It would be nice to write it in the doc, and check it is the code to
report an informative error.