Release version 0.4.0. (#37)

Includes a first initial README with a small overview of browsers.

Author: sbarfurth

MODULE.bazel

@@ -2,7 +2,7 @@
 
 module(
     name = "rules_browsers",
-    version = "0.3.0",
+    version = "0.4.0",
 )
 
 # Load default browser versions used by targets in `//browsers` for direct consumption. Test rules

MODULE.bazel.lock

@@ -0,0 +1,52 @@
+# rules_browsers
+
+Use browsers in Bazel and run tests with them.
+
+## Usage
+
+Add the dependency for `rules_browsers` to your `MODULE.bazel` file.
+
+```starlark
+bazel_dep(name = "rules_browsers", version = "0.4.0")
+```
+
+This allows you to use provided testing macros. You can also use the
+`browser_group` and `browser_toolchain_alias` targets in the browser
+directories.
+
+By default, browsers will be used at the _default version_. The default version
+is usually the latest version that was available at the time of the used release
+of `rules_browsers`. The consequence of this is that upgrading `rules_browsers`
+usually means changing the default browser version.
+
+> [!NOTE]
+> The default version of browsers can change in any release.
+
+You can manually specify the exact browser version to use for each browser by
+providing a version in your own `MODULE.bazel` file. The set of available
+versions can be found in `browsers/private/versions/<browser>.bzl`.
+
+```starlark
+browsers = use_extension("@rules_browsers//browsers:extensions.bzl", "browsers")
+browsers.chrome(version = "x.x.x")
+browsers.chromedriver(version = "x.x.x")
+browsers.firefox(version = "x.x.x")
+```
+
+## Supported Browsers
+
+- Chrome _(`chrome-headless-shell`)_
+- Chromedriver
+- Firefox
+
+Each browser is provided for the following OS x architecture combinations:
+
+- `linux_x64`
+- `macos_x64`
+- `macos_arm64`
+- `windows_x64`
+
+## Version Policy
+
+This project does not explicitly follow any versioning policy at this time. Any
+release may include breaking changes.

README.md

@@ -1,6 +1,6 @@
 {
   "name": "rules_browsers",
-  "version": "0.3.0",
+  "version": "0.4.0",
   "description": "",
   "main": "index.js",
   "scripts": {