For the newest version of Photoshop CC2015.5 you must use this link to find the correct plug in
Download the entire folder contents.
In the folder, unzip the AnimDessin2-CC-2015.zip folder
In that folder you should see and installer.jsx file. you will need to find this in the next step 🙂
Open Photoshop, File>Scripts>Browse and find the installer.jsx file mentioned above.
Then press ok, if you get an error message that is ok.
Open Photoshop again and go to Window>Extensions>AnimDessin2
A new window of tools should pop up! HORRAY!
*please note this worked for me but please check the link above for alternate instructions.