Board Thread:Support Requests - Getting Technical/@comment-3397118-20130214030604/@comment-5267906-20130214035136

Pywikipediabot has a script called pagefromfile.py that might be what you're after. Documentation for it can be found here. I've used the pywikipedia bot program a few times and it seems to work pretty well on Wikia. It does require use of the command line though, which scares some people.