Problem with installation of third party

hi
I have tried to install the third party libraries for checker.
In the readme file here is “clone the repository from the website”, should I just click the “clone” button and write the following commands in Terminal in Linux?
But there is of course a error, “no such file cd: lib ccd”
What is the correct operation?

Or should I just download the files and rename it as lib ccd?

It would be helpful to have some knowledge about git and the console to understand what is going on.
To clone the repository into a subfolder from the console type:
git clone https://github.com/danfis/libccd
then follow the commands from the README.rst