For those who are still interested in in use this skin in Gotham, I have sucess installing it. What I have done:
1.- If you have already updated to Gotham you will see that is market as not compatible, Well I have downloaded the github master skin from Jezzx posted in this forum. If not , just make a copy of the skin folder before upgrade.
2.- Unzip the github master skin and open with your prefered editor (for example wordpad) the addon.xml file and localize de the following line:
<import addon="xbmc.gui" version="4.0.0"/> and change to <import addon="xbmc.gui" version="5.0.1"/> , and save.
3.- Finally, re-zip the github master skin folder, and then you can install as any other addon in xbmc menu>addons>install from a zip file.
And done!!!! you got again PM3
Tested in Gotham 3.0 compiled May 5th