Minor alterations

Dockerfile.example

@@ -183,7 +183,7 @@ export GSTREAMER_PATH=/opt/gstreamer\n\
 source /opt/gstreamer/gst-env\n\
 export LD_PRELOAD=/usr/local/lib/selkies-js-interposer/joystick_interposer.so\n\
 export SDL_JOYSTICK_DEVICE=/dev/input/js0\n\
-sudo mkdir -p /dev/input\n\
+sudo mkdir -pm755 /dev/input\n\
 sudo touch /dev/input/{js0,js1,js2,js3}\n\
 Xvfb -screen :0 8192x4096x24 +extension RANDR +extension GLX +extension MIT-SHM -nolisten tcp -noreset -shmem 2>&1 >/tmp/Xvfb.log &\n\
 until [[ -S /tmp/.X11-unix/X0 ]]; do sleep 1; done && echo 'X Server is ready'\n\

addons/js-interposer/README.md

@@ -2,7 +2,7 @@
 
 LD_PRELOAD library for interposing application calls to open a Linux joystick device and pass data via a unix domain socket.
 
-This allows the selkies-gstreamer WebRTC interface to pass gamepad events over the Data Channel and translate them to joystick events without requiring access to /dev/input/js0 or depend kernel modules like uinput to emulate devices.  
+This allows the `selkies-gstreamer` WebRTC interface to pass gamepad events over `RTCDataChannel`, and translate them to joystick events without requiring access to /dev/input/js0 or depending on kernel modules including uinput to emulate devices.
 
 ## Compiling
 
@@ -12,7 +12,7 @@ gcc -shared -fPIC -o joystick_interposer.so joystick_interposer.c -ldl
 
 ## Testing
 
-1. Start the python joystick emulator:
+1. Start the Python joystick emulator:
 
 ```bash
 python3 js-interposer-test.py
@@ -24,4 +24,4 @@ This creates a new unix domain socket at `/tmp/selkies_js0.sock` and simulates j
 
 ```bash
 LD_PRELOAD=${PWD}/joystick_interposer.so jstest /dev/input/js0
-```
+```