switch to rodio backend for playback

.travis.yml

@@ -5,4 +5,4 @@ rust:
 matrix:
   fast_finish: true
 before_install:
-  - sudo apt-get install -y libpulse-dev libdbus-1-dev
+  - sudo apt-get install -y libasound2-dev libdbus-1-dev

Cargo.toml

@@ -42,7 +42,7 @@ default-features = false
 features = ["pancurses-backend"]
 
 [features]
-pulseaudio_backend = ["librespot/pulseaudio-backend"]
+rodio_backend = ["librespot/rodio-backend"]
 portaudio_backend = ["librespot/portaudio-backend"]
 mpris = ["dbus"]
-default = ["pulseaudio_backend", "mpris"]
+default = ["rodio_backend", "mpris"]

README.md

@@ -106,8 +106,8 @@ https://github.com/hrkfdn/ncspot/pull/40.
 
 ## Audio backends
 
-By default ncspot is built using the PulseAudio backend.
-To make it use the PortAudio backend (e.g. for macOS, *BSD, ..),
-you need to recompile ncspot with the `portaudio_backend` feature:
+By default ncspot is built using the Rudio backend.  To make it use the
+PortAudio backend (e.g. *BSD), you need to recompile ncspot with the
+`portaudio_backend` feature:
 
 * `cargo run --no-default-features --features portaudio_backend`