docs(README): Direct usage examples

Author: tony

README.md

@@ -53,8 +53,8 @@ Connect to a live tmux session:
 
 ```python
 >>> import libtmux
->>> s = libtmux.Server()
->>> s
+>>> svr = libtmux.Server()
+>>> svr
 Server(socket_path=/tmp/tmux-.../default)
 ```
 
@@ -66,6 +66,49 @@ current tmux server / session / window pane.
 [ptpython]: https://github.com/prompt-toolkit/ptpython
 [ipython]: https://ipython.org/
 
+Run any tmux command, respective of context:
+
+Honors tmux socket name and path:
+
+```python
+>>> server = Server(socket_name='libtmux_doctest')
+>>> server.cmd('display-message', 'hello world')
+<libtmux...>
+```
+
+New session:
+
+```python
+>>> server.cmd('new-session', '-d', '-P', '-F#{session_id}').stdout[0]
+'$2'
+```
+
+```python
+>>> session.cmd('new-window', '-P').stdout[0]
+'libtmux...:2.0'
+```
+
+Time for some tech, direct to a rich, `Window` object:
+
+```python
+>>> Window.from_window_id(window_id=session.cmd('new-window', '-P', '-F#{window_id}').stdout[0], server=session.server)
+Window(@2 2:..., Session($1 libtmux_...))
+```
+
+Create a pane from a window:
+
+```python
+>>> window.cmd('split-window', '-P', '-F#{pane_id}').stdout[0]
+'%2'
+```
+
+Magic, directly to a `Pane`:
+
+```python
+>>> Pane.from_pane_id(pane_id=session.cmd('split-window', '-P', '-F#{pane_id}').stdout[0], server=session.server)
+Pane(%... Window(@1 1:..., Session($1 libtmux_...)))
+```
+
 List sessions:
 
 ```python