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README.md

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+# Confique: type-safe, layered configuration library
+
+[<img alt="CI status of main" src="https://img.shields.io/github/workflow/status/LukasKalbertodt/confique/CI/main?label=CI&logo=github&logoColor=white&style=for-the-badge" height="23">](https://github.com/LukasKalbertodt/confique/actions?query=workflow%3ACI+branch%3Amaster)
+[<img alt="Crates.io Version" src="https://img.shields.io/crates/v/confique?logo=rust&style=for-the-badge" height="23">](https://crates.io/crates/confique)
+[<img alt="docs.rs" src="https://img.shields.io/crates/v/confique?color=blue&label=docs&style=for-the-badge" height="23">](https://docs.rs/confique)
+
+Confique is a rather light-weight library that helps with configuration management in a type-safe and DRY (don't repeat yourself) fashion.
+
+**Features**:
+
+- **Type safe**: the code using the config values does not need to parse strings or `unwrap` any `Option`s.
+  All values already have the correct type.
+- **Layered configuration**: you can load from and then merge multiple sources of configuration.
+- **Load config values from**:
+    - Environment variables
+    - Files: TOML & YAML
+    - Anything with a `serde` Deserializer (built-in support for more formats coming soon)
+- **Based on `serde`**: less code in `confique` (more light-weight) and access to a huge ecosystem of high quality parsers.
+- Easily generate configuration "templates" to describe all available config values to your users.
+
+
+## Simple example
+
+```rust
+use std::path::PathBuf;
+use confique::Config;
+
+
+#[derive(Config)]
+struct Conf {
+    #[config(env = "EXAMPLE_APP_USERNAME")]
+    username: String,
+
+    #[config(env = "EXAMPLE_APP_BUFFER_SIZE", default = 4096)]
+    buffer_size: u32,
+
+    #[config(nested)]
+    log: LogConf,
+}
+
+#[derive(Config)]
+struct LogConf {
+    #[config(default = true)]
+    stdout: bool,
+
+    file: Option<PathBuf>,
+}
+
+
+let config = Conf::builder()
+    .env()
+    .file("example-app.toml")
+    .file("/etc/example-app/config.toml")
+    .load()?;
+```
+
+See [**the documentation**](https://docs.rs/confique) for more information.
+
+## Status of this project
+
+Confique is still a very young project.
+There are lots of features and improvements already planned.
+I'm developing this library alongside a web project that uses it.
+
+
+<br />
+
+---
+
+## License
+
+Licensed under either of <a href="LICENSE-APACHE">Apache License, Version
+2.0</a> or <a href="LICENSE-MIT">MIT license</a> at your option.
+Unless you explicitly state otherwise, any contribution intentionally submitted
+for inclusion in this project by you, as defined in the Apache-2.0 license,
+shall be dual licensed as above, without any additional terms or conditions.