message: docs(CSVEntry): added information about new footer capabilities
diff: - [Column validation](#column-validation)
  - [Static Column Headers](#static-column-headers)
  - [Full Width Table](#full-width-table)
  +- [Custom footer content](#custom-footer-content)
  +- [Footer direction](#footer-direction)
  <!-- END doctoc generated TOC please keep comment here to allow auto update -->
  @@ -109,3 +111,29 @@ If the table should be one full-width column, set both in the input:
  </ts-csv-entry>
  ```
  > NOTE: full width should only be with one column
  +
  +## Custom footer content
  +
  +Consumer's can add custom footer content by enclosing it within the CSVEntry component:
  +
  +```html
  +<ts-csv-entry>
  + <button>My custom footer button!</button>
  +</ts-csv-entry>
  +```
  +
  +This content will be added opposite the default footer buttons set.
  +
  +
  +## Footer direction
  +
  +The footer layout defaults to `ltr` mode which lays out the default buttons on the left and any custom content on the
  +right. This can be reversed by the `footerDirection` input.
  +
  +```html
  +<ts-csv-entry footerDirection="rtl">
  +</ts-csv-entry>
  +```
  +
  +Allowed directions are: `ltr`, `rtl`.
  +
  