Add list of supported fields

README.md

@@ -1,2 +1,40 @@
 # tropy-plugin-csl
 Tropy plugin to export your items to Zoterao as CSL/JSON
+
+# Custom Templates
+To customize how your Tropy item is mapped to CSL/JSON and Zotero,
+duplicate your Tropy template in Tropy's template editor and assign
+each field you want to export a CSL/JSON field by setting the template
+field's label to the corresponding CSL/JSON id. The following CSL/JSON
+fields are currently recognized:
+
+* chapter-number
+* collection-number
+* edition
+* issue
+* number
+* number-of-pages
+* number-of-volumes
+* volume
+* accessed
+* container
+* event-date
+* issued
+* original-date
+* submitted
+* author
+* collection-editor
+* composer
+* container-author
+* director
+* editor
+* editorial-director
+* illustrator
+* interviewer
+* original-author
+* recipient
+* reviewed-author
+* translator
+
+To use your custom mapping, select your template in the plugin's
+configuration.