update for mediawiki

Great plugin, works as expected.
Just an FYI, media wiki has updated their download page to use SSL, so the code needs to be updated and another dependency added.

This part needs to be updated to use HTTPS instead of HTTP:

# url download mediawiki software
my $mw_dl_url = “https://www.mediawiki.org/wiki/Download”;

also I am using Ubuntu and needed to install a dependency in order to get the new https site to load.

“apt-get install libcrypt-ssleay-perl” should do it.