add documentation

Author: simontreanor

docs/commandline.md

@@ -26,6 +26,7 @@ The command line options accepted are:
 | `--input`            | Input directory of content (default: `docs`)                                                                                                                                                                                                                                                                                                                                                                    |
 | `--projects`         | Project files to build API docs for outputs, defaults to all packable projects                                                                                                                                                                                                                                                                                                                                  |
 | `--output`           | Output Directory (default 'output' for 'build' and 'tmp/watch' for 'watch')                                                                                                                                                                                                                                                                                                                                     |
+| <span style="white-space: nowrap;">`--ignoreuncategorized`</span> | Disable generation of the 'Other' category in the navigation bar for uncategorized docs |
 | `--noapidocs`        | Disable generation of API docs                                                                                                                                                                                                                                                                                                                                                                                  |
 | `--ignoreprojects`   | Disable project cracking                                                                                                                                                                                                                                                                                                                                                                                        |
 | `--eval`             | Evaluate F# fragments in scripts                                                                                                                                                                                                                                                                                                                                                                                |