Even can't download

[gerchicov]

On use SourceTree:

git -c diff.mnemonicprefix=false -c core.quotepath=false clone --recursive https://github.com/lukelutman/CCSVG /Users/vyachaslav/Documents/CCSVG
warning: templates not found /usr/local/git/share/git-core/templates
Permission denied (publickey).
fatal: The remote end hung up unexpectedly
Clone of 'git@github.com:lukelutman/MonkSVG.git' into submodule path 'external/MonkSVG' failed
Cloning into '/Users/vyachaslav/Documents/CCSVG'...
Submodule 'external/MonkSVG' (git@github.com:lukelutman/MonkSVG.git) registered for path 'external/MonkSVG'
Submodule 'external/MonkVG' (git@github.com:lukelutman/MonkVG.git) registered for path 'external/MonkVG'
Submodule 'external/cocos2d-iphone' (git://github.com/cocos2d/cocos2d-iphone.git) registered for path 'external/cocos2d-iphone'
Cloning into 'external/MonkSVG'...
fatal: destination path '/Users/vyachaslav/Documents/CCSVG' already exists and is not an empty directory.
Completed with errors, see above

On use Terminal:
git clone git@github.com:lukelutman/CCSVG.git
Cloning into 'CCSVG'...
Permission denied (publickey).
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.

And the result is an unworkable project