add a bit of readme

README.md

@@ -5,6 +5,27 @@ Dip
 
 Configurable webhook server.
 
+Set up some kind of directory structure like this:
+
+```
+root/
+  - config.toml
+  - hooks/
+      - website.com
+```
+
+where every file in the `hooks` subdirectory is a TOML document of the following format:
+
+```toml
+# The handler to use. This must match one of the handlers defined in the
+# handlers directory or one of the builtins such as "github"
+type = "github"
+
+# wip lol
+```
+
+Then run the `dip` binary with the option `-d <root>` where `root` points to the root directory you made above.
+
 Contact
 -------