Fixes .xls document. Copies the original prices to the variable products.
The installation requires a composer to be installed. If you haven't installed it yet, you can get it here: https://getcomposer.org/download/
git clone https://github.com/neverlose-lv/excel_fixer.git
composer install
php path/to/input_file.xls path/to/output_file.xls