@@ 15,3 15,50 @@ Caveats:
Enough plumbing commands are written to make this write the initial commit with
itself, which is how the initial commit was written. Huzzah.
+
+## How to use
+
+1. Don't
+
+Okay, fine. Because only plumbing commands are implemented, you have to live
+with a garbage manual process. Do something like this:
+
+```
+git clone https://git.sr.ht/~sircmpwn/shit
+mkdir my-project
+cd my-project
+../shit/init
+# Write some code
+```
+
+So we'll assume shit is at `../shit`.
+
+To create a new index from all of your files (note, subdirectories aren't
+working yet):
+
+```
+../shit/update-index *
+```
+
+Then to create a tree object from these:
+
+```
+../shit/write-tree | ./hash-object -t tree -w
+```
+
+This will print the tree ID to stdout. Use that to make a commit:
+
+```
+export GIT_AUTHOR_NAME="Your Name"
+export GIT_AUTHOR_EMAIL="you@example.org"
+../shit/commit-tree <tree sha> | ./hash-object -t commit -w
+```
+
+This will print out the new commit's SHA. To update master to point to this new
+commit:
+
+```
+echo <commit sha> > .git/refs/heads/master
+```
+
+Tada.