List git-forest dependencies in Readme

README.md

@@ -114,7 +114,7 @@ If you aren't using any ZSH frameworks, or if you're a `bash` user, do the follo
 | `git-find-dirty` | Matthew McCullough's [scripts](https://github.com/matthewmccullough/scripts/) repository | |
 | `git-flush` | John Wiegley's [git-scripts](https://github.com/jwiegley/git-scripts) | Compact your reposistory by dropping all reflogs, stashes, and other cruft that may be bloating your pack files. |
 | `git-force-mtimes` | John Wiegley's [git-scripts](https://github.com/jwiegley/git-scripts) | Sets mtimes of all files in the reprository their last change date based on git's log. Useful to avoid too new dates after a checkout confusing `make` or `rake`. |
-| `git-forest` | Jan Engelhardt | Prints a text-based tree visualisation of your repository. |
+| `git-forest` | Jan Engelhardt | Prints a text-based tree visualisation of your repository. Requires [Git.pm](https://metacpan.org/release/Git) |
 | `git-git` | Joe Block <jpb@unixorn.net> | Typing `git git foo` will make git do a `git foo` instead of complaining. |
 | `git-github-open` | ? | Open GitHub file/blob page for FILE on LINE. |
 | `git-ignored` | ? | Show files being ignored by git in the repo. |