add: raw connection example to readme

README.md

@@ -11,6 +11,44 @@ pip install kcp
 ```
 
 ## Examples
+### Just the raw connection
+While kcp.py features a diverse set of pre-implemented uses of KCP (see below), it also allows you to directly manage your KCP connections.
+Here is an example using two independent connections locally.
+```py
+from kcp import KCP
+
+# Create two connections using the same conversation ID.
+kcp1 = KCP(
+    conv_id=1,
+)
+
+kcp2 = KCP(
+    conv_id=1,
+)
+
+# Update their timing information.
+kcp1.update()
+kcp2.update()
+
+
+# Set each connection to send data to the other one (usually this would go through some network layer, but
+# for the purpose of the example we do this).
+@kcp1.outbound_handler
+def send_kcp1(_, data: bytes) -> None:
+    kcp2.receive(data)
+
+
+@kcp2.outbound_handler
+def send_kcp2(_, data: bytes) -> None:
+    kcp1.receive(data)
+
+# Enqueue data to be sent and send it off.
+kcp1.enqueue(b"Hello, world!")
+kcp1.flush()
+
+print(kcp2.get_received()) # b"Hello, world!"
+```
+
 ### Asynchronous Server
 kcp.py features an implementation of an asynchronous server using the event loop protocol API.
 ```py