"Permission denied (publickey)." during cloning. error.

[enderkus]

What happened?
git@github.com: Permission denied (publickey).

What did you expect to happen?
There should be cloning without the need for an SSH key.

Are you willing to submit a pull request to fix this bug?
PR for solution:: #25
It is possible to get an error similar to the following during Secp256K1 installation.
For example : git@github.com: Permission denied (publickey).
This problem can be solved in a very simple way. Web urls for cloning can be added to the documentation.