Suggest using CPAL instead of PortAudio

Author: wmedrano

README.md

@@ -11,23 +11,24 @@ rust-portaudio
 
 PortAudio is a free, cross-platform, open-source, audio I/O library.
 
-**rust-portaudio** is still under development, so there may be bugs - please feel free to add an issue or even better, submit a PR!
-
-To use **rust-portaudio** in your own project, add it to your Cargo.toml dependencies like so:
-
-```toml
-[dependencies]
-portaudio = "X.Y.Z"
-```
+**rust-portaudio** is in maintenance mode. Consider using
+[CPAL](https://github.com/RustAudio/cpal) instead.
 
 
 # Installation
 
-**rust-portaudio** will try to detect portaudio on your system and, failing that (or if given the `PORTAUDIO_ONLY_STATIC` environment variable on the build process), will download and build portaudio statically. If this fails please let us know! In the mean-time, you can manually [download and install PortAudio](http://www.portaudio.com/download.html) yourself.
-
-On Mac OS X, you may need to install manually `portaudio` and `pkg-config` (using [brew](http://brew.sh/), run `brew install portaudio` and `brew install pkg-config`)
+**rust-portaudio** will try to detect portaudio on your system and, failing that
+(or if given the `PORTAUDIO_ONLY_STATIC` environment variable on the build
+process), will download and build portaudio statically. If this fails please let
+us know! In the mean-time, you can manually [download and install
+PortAudio](http://www.portaudio.com/download.html) yourself.
 
-**rust-portaudio** is built using cargo, so just type `cargo build` at the root of the **rust-portaudio** repository.
+On Mac OS X, you may need to install manually `portaudio` and `pkg-config`
+(using [brew](http://brew.sh/), run `brew install portaudio` and `brew install
+pkg-config`)
 
-You can build the tests and examples with `cargo test`, and the documentation with `cargo doc`.
+**rust-portaudio** is built using cargo, so just type `cargo build` at the root
+of the **rust-portaudio** repository.
 
+You can build the tests and examples with `cargo test`, and the documentation
+with `cargo doc`.