Update README

README.md

@@ -196,6 +196,9 @@ The following options are for the `archive` command specifically.
     - `json` (default)
     - `xml`
     - `yaml`
+- `--full-context`
+  - This option will, instead of downloading an individual comment, download the submission that comment is a part of
+  - May result in a longer run time as it retrieves much more data
 
 ### Cloner Options