Document --power-off-on-close

The option was not documented.

Refs #824 <https://github.com/Genymobile/scrcpy/pull/824>

README.md

@@ -582,6 +582,14 @@ scrcpy --turn-screen-off --stay-awake
 scrcpy -Sw
 ```
 
+#### Power off on close
+
+To turn the device screen off when closing scrcpy:
+
+```bash
+scrcpy --power-off-on-close
+```
+
 
 #### Show touches
 

app/scrcpy.1

@@ -136,6 +136,10 @@ Set the TCP port (range) used by the client to listen.
 
 Default is 27183:27199.
 
+.TP
+.B \-\-power\-off\-on\-close
+Turn the device screen off when closing scrcpy.
+
 .TP
 .B \-\-prefer\-text
 Inject alpha characters and space as text events instead of key events.

app/src/cli.c

@@ -133,6 +133,9 @@ scrcpy_print_usage(const char *arg0) {
         "        Default is " STR(DEFAULT_LOCAL_PORT_RANGE_FIRST) ":"
                               STR(DEFAULT_LOCAL_PORT_RANGE_LAST) ".\n"
         "\n"
+        "    --power-off-on-close\n"
+        "        Turn the device screen off when closing scrcpy.\n"
+        "\n"
         "    --prefer-text\n"
         "        Inject alpha characters and space as text events instead of\n"
         "        key events.\n"