Update README.
Add _fivestar_field_formatter_view() to house the html generation of the fivestar, and changed fivestar_field_formatter_view() to use it for both fivestar fields and fivestar target fields. Changed _fivestar_field_formatter_view_pageshow() to declare a success callback first, then call it after we fetch the data, or call it directly if no data needs to be fetched, and touched up this function to recognize pre existing ratings within comments that are attached to the target parent node.