git-add.txt: document 'add.ignoreErrors'

Signed-off-by: Valentin Haenel <[email protected]>
Noticed-by: Junio C Hamano <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: esc

Documentation/git-add.txt

@@ -134,6 +134,8 @@ subdirectories.
 	If some files could not be added because of errors indexing
 	them, do not abort the operation, but continue adding the
 	others. The command shall still exit with non-zero status.
+	The configuration variable `add.ignoreErrors` can be set to
+	true to make this the default behaviour.
 
 --ignore-missing::
 	This option can only be used together with --dry-run. By using