doc: brief OpenBSD bits

Users are always advised to use official binary packages and/or build
spotifyd themselves using official ports infrastructure (from which
packages are built), so haven't duplicated any compilation instructions
here.

The official package also ships a README with a suggestion on how to
configure and run `spotifyd` which ought to be enough, anyways.

docs/src/SUMMARY.md

@@ -8,6 +8,7 @@
   - [Cross Compiling on Ubuntu](./installation/Cross-Compiling-on-Ubuntu.md)
   - [Installing with Homebrew on macOS](./installation/MacOS.md)
   - [Installing on FreeBSD](./installation/FreeBSD.md)
+  - [Installing on OpenBSD](./installation/OpenBSD.md)
 - [Configuration](./config/README.md)
   - [CLI options](./config/Cli.md)
   - [Configuration file](./config/File.md)

docs/src/installation/OpenBSD.md

@@ -0,0 +1,25 @@
+# OpenBSD install guide
+
+`spotifyd` is available on all supported Rust architectures:
+
+* aarch64
+* amd64
+* i386
+* powerpc64
+* riscv64
+* sparc64
+
+## Install
+
+```sh
+# pkg_add spotifyd
+```
+
+## Configuring spotifyd
+
+The official package uses PortAudio and works out of the box, no configuration is required.
+
+## Running spotifyd
+
+You may start `spotifyd` as background daemon in your `~/.xsession` X11 startup script
+or have clients like `spotify-qt` start/stop it accordingly.

docs/src/installation/README.md

@@ -83,6 +83,6 @@ To enable an additional audio backend, pass `<audio_backend_name>_backend` as a
 | Feature Flag | Description                                                                         |
 |--------------|-------------------------------------------------------------------------------------|
 | dbus_keyring | Provides password authentication over the system's keyring (supports all platforms) |
-| dbus_mpris   | Provides multimedia key support (Linux only)                                      |
+| dbus_mpris   | Provides multimedia key support (Linux and BSD only)                                |
 
 > __Note:__ Compiling Spotifyd with all features and the pulseaudio backend on Ubuntu would result in the following command: `cargo build --release --no-default-features --features pulseaudio_backend,dbus_keyring,dbus_mpris`