Read tree config from .git/config if run from a kernel dir #64
Description
We got feedback that other tools like b4 support reading the git config for the kernel tree, using the information as parameters for the tool, so we should do something similar for kci-dev, so users can quickly check for results from their trees during their development.
We can also have a --git-config parameter that can be used to pass a config that is not on the current kernel dir.
Related to #57