failing hook leaves temp files in repo root

[brandonjbjelland]

If temp files need to be a part of this hook, I'd suggest putting them in a standard tucked away temp file location on the system. Since you're using bash anyway, we can assume Windows isn't supported unless through WSL. Consider sticking temp files in /tmp/ and having some cleanup logic if the hook fails.

[antonbabenko]

This has been resolved by #16