When I add your update site to Eclipse I get the following error:
"Unable to read repository at http://e-p-i-c.sf.net/updates/content.xml.
Software caused connection abort: connect"
You seem to have CSS turned off.
Please don't fill out this field.
I think the documentation uses an obsolete URL. I got better results with the following:
Eclipse Perl Integration - http://www.epic-ide.org/updates/