Document new sync:upload-directory CLI command

Author: bryannielsen

docs/cli/built-in-commands/sync-upload-directory.md

@@ -0,0 +1,19 @@
+# `sync:upload-directory`
+
+This command synchronizes the file records in the database with the files stored in a given upload directory. This functionality is also available through the [File Manager](control-panel/file-manager/synchronizing.md).
+
+## Options list:
+
+```
+    --upload-id=<value>
+    -u <value>
+        Upload Directory ID. If not provided, list of Upload Directories with corresponding IDs will be shown to choose from
+
+    --manipulations=<value>
+    -m <value>
+        Image manipulations to regenerate. Comma separated list of manipulation IDs. Use 'all' to regenerate all manipulations. If not provided, a list of available manipulations with corresponding IDs will be shown to choose from
+```
+
+## Example:
+
+`php eecli.php sync:upload-directory --upload-id=6 --manipulations=all`

docs/cli/intro.md

@@ -30,6 +30,7 @@ By default the CLI is located `system/ee/eecli.php` .
     - Sync
         - [sync:conditional-fields - Sync channel entry conditional logic](cli/built-in-commands/sync-conditional-fields.md)
         - [sync:reindex - Sync content used in search indexes](cli/built-in-commands/sync-reindex.md)
+        - [sync:upload-directory - Sync files in an upload directory](cli/built-in-commands/sync-upload-directory.md)
     - [Update ExpressionEngine](cli/built-in-commands/update.md)
 - [Creating a Command](cli/creating-a-command.md)
 - [Defining Input](cli/defining-input.md)