Copying of cnchi.log was already defined but never called.
Cnchi will retry once if exception occurs with grub-install or grub-mkconfig. Set variable self.grub_ok to False If there were any issues in grub install that might result in unbootable system giving us the ability to warn user.
Merge branch 'testing' of https://github.com/Antergos/Cnchi into testing
Merge pull request #100 from lots0logs/testing

Better handling of exceptions during grub install.