update readme

Cargo.toml

@@ -11,7 +11,6 @@ path = "src/main.rs"
 [dependencies]
 color-eyre = { version = "0.6.3", default-features = false }
 
-# TODO: update to a released version once available
 polkadot-parachain-lib = { git = "https://github.com/paritytech/polkadot-sdk", branch = "stable2409" }
 sc-chain-spec = { git = "https://github.com/paritytech/polkadot-sdk", branch = "stable2409" }
 sc-cli = { git = "https://github.com/paritytech/polkadot-sdk", branch = "stable2409" }

README.md

@@ -1,2 +1,27 @@
 # acala-node
-The client node for Acala & Karura parachain
+
+This is the client node for Acala and Karura. For runtime code, please refer to [Acala repo](https://github.com/AcalaNetwork/Acala).
+
+# Building
+
+```bash
+curl https://sh.rustup.rs -sSf | sh
+```
+
+You may need additional dependencies, checkout [substrate.io](https://docs.substrate.io/v3/getting-started/installation) for more info
+
+```bash
+sudo apt-get install -y git clang curl make libssl-dev llvm libudev-dev protobuf-compiler
+```
+
+Debug build:
+
+```bash
+cargo build
+```
+
+Release build:
+
+```bash
+cargo build --release
+```