Revert "Added gitignore"

This reverts commit 1f5dab85def49da638c9f8175a9527053033797e, reversing
changes made to 2ff3108a82b30d4ff9aba51e94039a1474008bd7.
Revert "Revert "Added gitignore""

This reverts commit be8e98efc939cc9db7e346e303668baeec718be4.
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