Conversion creates directories for pages with forward slashes in their page titles

[monkeyhybrid]

First off, a big thank you for making this tool! I just successfully converted several hundred pages from MediaWiki to Markdown, saving me many days of manual work.

The only problem I hit was with any MediaWiki page that contained one or more forward slashes in the page title. During conversion, convert.php would treat the forward slash as a directory separator, creating directory hierarchies that shouldn't exist, with no actual markdown within them.

Thankfully, I only had a handful of pages like this and I manually renamed them in MediaWiki beforehand, to get around this issue.