Is it possible to install conky-manager
on Freya? Is is compatible with Pantheon Files?
If yes how can I start Conky when my computer boots?
Open your terminal, and add a new PPA to your repositories, then install it.
sudo add-apt-repository ppa:teejee2008/ppa
sudo apt-get update
sudo apt-get install conky-manager
To run conky at startup, you go to Applications -> System Settings -> Applications -> Startup -> Click the + icon at the bottom left corner, enter conky
in the the bottom text input and hit enter.
I use conky with elementary OS 0.3 Freya with no issues.
add-apt-repository
in first place to add a new PPA, that is hosted at launchpad