taxonomy_node 5.x-1.2

- Some ideas from #321477: initially received a Page not found error when trying to edit the associated node by Matt V.
- A new readme file
- Better handling of the term edition form when no association has been made
- The feature to create the node from within the term edit form if the association has been set.
- A limit to the batch creation to prevent script timeout
- Handling node delete operation if node is deleted from the content admin page or by some other means.