<p>This can be merged.</p>

<p>Having references to pseudo-variables in there README/docs of the module is ok, but they must be documented in the wiki, where is the main reference documentation for variables. I added it for this pull request at:</p>

<ul class="task-list">
<li><a href="http://www.kamailio.org/wiki/cookbooks/devel/pseudovariables?&#presence_module_pseudo-variables">http://www.kamailio.org/wiki/cookbooks/devel/pseudovariables?&#presence_module_pseudo-variables</a></li>
</ul>

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