Check setup order of file renaming and in-file replacements

[matthias-mayr]

The readme suggest:

# Rename inside files
git grep -l 'template' | xargs sed -i 's/template/my_package_name/g'
# Rename files
find . -depth -execdir rename 's/template/my_package_name/' '{}' \;

unfortunately a consequence of this is that the Readme itself gets altered and one can not just copy the other command.

It would be worthwhile to check if the order can be reversed. That would still alter the readme, but then we don't need the command anymore.