chore: populate readmes

README.md

@@ -1,3 +1,24 @@
-### cargo-packager
+# cargo-packager
 
 Rust executable packager, bundler and updater.
+
+## Installation
+
+```
+cargo install cargo-pacakger --locked
+```
+
+## Usage
+
+```
+cargo pacakger
+```
+
+## Configuration
+
+By default, `cargo-pacakger` reads configuration from `Packager.toml` or `pacakger.json` if exists, and from `package.metadata.packager` table in `Cargo.toml`.
+You can specify a custom configuration file using `-c/--config` flag.
+
+For full list of configuration options, see https://docs.rs/cargo-packager/latest/cargo-packager/struct.Config.html
+
+You could also use the schema from GitHub releases to validate your configuration or have auto completions in your IDE.

crates/config/README.md

@@ -1,3 +1,3 @@
-### cargo-packager-config
+# cargo-packager-config
 
-A crate that hosts the configuration file for [`cargo-packager`](../packager/).
+Config types for [`cargo-packager`](../packager/).

crates/packager/README.md

@@ -1,3 +1,24 @@
-### cargo-packager
+# cargo-packager
 
-Rust executable packager and bundler.
+Rust executable packager and bundler CLI and library.
+
+## Installation
+
+```
+cargo install cargo-pacakger --locked
+```
+
+## Usage
+
+```
+cargo pacakger
+```
+
+## Configuration
+
+By default, `cargo-pacakger` reads configuration from `Packager.toml` or `pacakger.json` if exists, and from `package.metadata.packager` table in `Cargo.toml`.
+You can specify a custom configuration file using `-c/--config` flag.
+
+For full list of configuration options, see https://docs.rs/cargo-packager/latest/cargo-packager/struct.Config.html
+
+You could also use the schema from GitHub releases to validate your configuration or have auto completions in your IDE.

crates/updater/README.md

@@ -1,3 +1,3 @@
-### cargo-packager-updater
+## cargo-packager-updater
 
 Rust executable updater for apps installed through the packages generated by [`cargo-packager`](../packager/).