Add predicted objects to predict command

Closes #36 (closed)

docs/usage/predict.md

@@ -21,7 +21,7 @@ Use the `teklia-dan predict` command to predict a trained DAN model on an image.
 | `--word-separators`         | List of word separators.                                                                     | `list`  | `[" ", "\n"]` |
 | `--line-separators`         | List of line separators.                                                                     | `list`  | `["\n"]`      |
 | `--threshold-method`        | Method to use for attention mask thresholding. Should be in `["otsu", "simple"]`.            | `str`   | `"otsu"`      |
-| `--threshold-value `        | Threshold to use for the "simple" thresholding method.                                       | `str`   | `0`      |
+| `--threshold-value `        | Threshold to use for the "simple" thresholding method.                                       | `int`   | `0`      |
 
 ## Examples