chore: adds README.md

README.md

@@ -0,0 +1,123 @@
+<p align="center">
+  <h1 align="center">
+    wdl
+  </h1>
+
+  <p align="center">
+    <a href="https://github.com/stjude-rust-labs/wdl/actions/workflows/CI.yml" target="_blank">
+      <img alt="CI: Status" src="https://github.com/stjude-rust-labs/wdl/actions/workflows/CI.yml/badge.svg" />
+    </a>
+    <a href="https://crates.io/crates/wdl" target="_blank">
+      <img alt="crates.io version" src="https://img.shields.io/crates/v/wdl">
+    </a>
+    <img alt="crates.io downloads" src="https://img.shields.io/crates/d/wdl">
+    <a href="https://github.com/stjude-rust-labs/wdl/blob/main/LICENSE-APACHE" target="_blank">
+      <img alt="License: Apache 2.0" src="https://img.shields.io/badge/license-Apache 2.0-blue.svg" />
+    </a>
+    <a href="https://github.com/stjude-rust-labs/wdl/blob/main/LICENSE-MIT" target="_blank">
+      <img alt="License: MIT" src="https://img.shields.io/badge/license-MIT-blue.svg" />
+    </a>
+  </p>
+
+  <p align="center">
+    Rust crates for Workflow Description Language (WDL) documents.
+    <br />
+    <a href="https://docs.rs/wdl"><strong>Explore the docs »</strong></a>
+    <br />
+    <br />
+    <a href="https://github.com/stjude-rust-labs/wdl/issues/new?assignees=&title=Descriptive%20Title&labels=enhancement">Request Feature</a>
+    ·
+    <a href="https://github.com/stjude-rust-labs/wdl/issues/new?assignees=&title=Descriptive%20Title&labels=bug">Report Bug</a>
+    ·
+    ⭐ Consider starring the repo! ⭐
+    <br />
+  </p>
+</p>
+
+## 📚 Getting Started
+
+The `wdl` family of crates consists of (a) a number of component crates (any
+crate that is not explicitly `wdl`) that are developed and versioned
+independently, and (b) a convenience crate (the `wdl` crate) that exists to ease
+syncing compatible component crates versions. Component crates can be enabled
+using features and are generally re-exported crates without the `wdl-` (or
+`wdl_`) prefix.
+
+### Use of the convenience crate
+
+Most users should prefer selecting a version of the convenience crate and
+enabling features as they wish. For example,
+
+```bash
+cargo add wdl --features grammar
+```
+
+and then
+
+```rust
+use wdl::grammar;
+```
+
+### Use of the convenience crate
+
+You are free to include component crates directly. For example,
+
+```rust
+use wdl_grammar;
+```
+
+Be aware, however, that versions between component crates are explicitly not
+compatible. In other words, if you choose not to use the convenience crate, it
+is not simple to derive which crate versions are compatible, and you'll need to
+manually sync those. We _highly_ recommend using the convenience crate if you
+intend to use more than one component crate in conjunction.
+
+## 🖥️ Development
+
+To bootstrap a development environment, please use the following commands.
+
+```bash
+# Clone the repository
+git clone [email protected]:stjude-rust-labs/wdl.git
+cd wdl
+
+# Build the crate in release mode
+cargo build --release
+
+# List out the examples
+cargo run --release --example
+```
+
+## 🚧️ Tests
+
+Before submitting any pull requests, please make sure the code passes the
+following checks (from the root directory).
+
+```bash
+# Run the project's tests.
+cargo test --all-features
+
+# Ensure the project doesn't have any linting warnings.
+cargo clippy --all-features
+
+# Ensure the project passes `cargo fmt`.
+cargo fmt --check
+
+# Ensure the docs build.
+cargo doc
+```
+
+## 🤝 Contributing
+
+Contributions, issues and feature requests are welcome! Feel free to check
+[issues page](https://github.com/stjude-rust-labs/wdl/issues).
+
+## 📝 License
+
+This project is licensed as either [Apache 2.0][license-apache] or
+[MIT][license-mit] at your discretion.
+
+Copyright © 2023-Present [St. Jude Children's Research Hospital](https://github.com/stjude).
+
+[license-apache]: https://github.com/stjude-rust-labs/wdl/blob/main/LICENSE-APACHE
+[license-mit]: https://github.com/stjude-rust-labs/wdl/blob/main/LICENSE-MIT