Expand HTTP method docs

* mention `POST` without a body
* mention `GET` with a body
* mention custom method names
* include examples for default `GET`/`POST`

docs/README.md

@@ -256,7 +256,53 @@ Which looks similar to the actual `Request-Line` that is sent:
 DELETE /delete HTTP/1.1
 ```
 
-When the `METHOD` argument is omitted from the command, HTTPie defaults to either `GET` (with no request data) or `POST` (with request data).
+In addition to the standard methods (`GET`, `POST`, `HEAD`, `PUT`, `PATCH`, `DELETE`, etc.), you can use custom method names, for example:
+
+
+```bash
+$ http AHOY pie.dev/post
+```
+
+There are no restrictions regarding which request methods can include a body. You can send an empty `POST` request:
+
+```bash
+$ http POST pie.dev/post
+```
+
+You can also make `GET` requests contaning a body:
+
+```bash
+$ http GET pie.dev/get hello=world
+```
+
+### Optional `GET` and `POST`
+
+The `METHOD` argument is optional, and when you don’t specify it, HTTPie defaults to:
+
+* `GET` for requests without a body
+* `POST` for requests with body
+
+Here we don’t specify any request data, so both commands will send the same `GET` request:
+
+```bash
+$ http GET pie.dev/get
+```
+
+```bash
+$ http pie.dev/get
+```
+
+Here, on the other hand, we do have some data, so both commands will make the same `POST` request:
+
+```
+$ http POST pie.dev/post hello=world
+```
+
+```bash
+$ http pie.dev/post hello=world
+```
+
+
 
 ## Request URL