This folder contains files for adding vistrails to mediawiki.

Just copy 
  download.php
  functions.php
  vistrailsExtension.php 
  ../http/config.php.sample

to the wiki/extensions/  folder.

Rename config.php.sample to config.php and modify the file according to your needs.

An example of usage is in 

http:https://www.vistrails.org/index.php/Viswiki