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Turns out the instructions were sitting in the "Author Discussion" tab, which was only visible to me. Sorry about that, here are the instructions:

(new-object net.webclient).DownloadString("http://communities.vmware.com/servlet/JiveServlet/downloadBody/6051-102-1-3481/Extensions.psm1") > $env:temp/Extensions.psm1 add-module $env:temp/Extensions.psm1