Added a new parameter to define a new CSV field separator (eg. ';')
Merge branch 'master' of https://github.com/jlethuau/woo-product-importer

* 'master' of https://github.com/jlethuau/woo-product-importer:
  Added new parameter: CSV field separator
Added a CSV sample file with ';' as a field separator to test the new parameter 'CSV Field separator'