Update README.

README.md

@@ -5,35 +5,41 @@ Implementation of a https://polkadot.io node in Rust.
 ## To play
 
 If you'd like to play with Polkadot, you'll need to install a client like this
-one. First, get rust if you don't already have it:
+one. First, get Rust and the support software if you don't already have it:
 
-   curl https://sh.rustup.rs -sSf | sh
-
-You'll need `make` and `cc`; if you don't have them then install them. On Debian
-that would be `sudo apt install make clang`.
+```
+curl https://sh.rustup.rs -sSf | sh
+sudo apt install make clang
+```
 
 Then, install Polkadot PoC-1:
 
-   cargo install --git https://github.com/paritytech/polkadot.git --branch v0.1.0
+```
+cargo install --git https://github.com/paritytech/polkadot.git --branch v0.1.0
+```
 
 You'll now have a `polkadot` binary installed to your `PATH`. You can drop the
 `--branch v0.1.0` to get the very latest version of Polkadot, but these
 instructions might not work in that case.
 
 ### Development
 
-You can run a simple single-node development "network" on your machine by running in
-one terminal:
+You can run a simple single-node development "network" on your machine by
+running in a terminal:
 
-   polkadot --chain=dev --validator --key Alice
+```
+polkadot --chain=dev --validator --key Alice
+```
 
 You can muck around by cloning and building the http://github.com/paritytech/polka-ui and http://github.com/paritytech/polkadot-ui or just heading to https://polkadot.js.org/apps.
 
 ### PoC-1 Testnet
 
 You can also connect to the global PoC-1 testnet. To do this, just use:
 
-   polkadot --chain=poc-1
+```
+polkadot --chain=poc-1
+```
 
 If you want to do anything on it (not that there's much to do), then you'll need
 to get some PoC-1 testnet DOTs. Ask in the Polkadot watercooler.
@@ -43,11 +49,15 @@ to get some PoC-1 testnet DOTs. Ask in the Polkadot watercooler.
 If you want to see the multi-node consensus algorithm in action locally, then
 you can create a local testnet. You'll need two terminals open. In one, run:
 
-   polkadot --chain=dev --validator --key Alice -d /tmp/alice
+```
+polkadot --chain=dev --validator --key Alice -d /tmp/alice
+```
 
 and in the other, run:
 
-   polkadot --chain=dev --validator --key Bob -d /tmp/bob --port 30334 --bootnodes 'enode://[email protected]:30333'
+```
+polkadot --chain=dev --validator --key Bob -d /tmp/bob --port 30334 --bootnodes 'enode://[email protected]:30333'
+```
 
 Ensure you replace `ALICE_BOOTNODE_ID_HERE` with the node ID from the output of
 the first terminal.
@@ -57,28 +67,38 @@ the first terminal.
 If you'd actually like hack on Polkadot, you can just grab the source code and
 build it. Ensure you have Rust and the support software installed:
 
-   curl https://sh.rustup.rs -sSf | sh
-   rustup update nightly
-   rustup target add wasm32-unknown-unknown --toolchain nightly
-   rustup update stable
-   cargo install --git https://github.com/alexcrichton/wasm-gc
-   cargo install --git https://github.com/pepyakin/wasm-export-table.git
-   sudo apt install make clang
+```
+curl https://sh.rustup.rs -sSf | sh
+rustup update nightly
+rustup target add wasm32-unknown-unknown --toolchain nightly
+rustup update stable
+cargo install --git https://github.com/alexcrichton/wasm-gc
+cargo install --git https://github.com/pepyakin/wasm-export-table.git
+sudo apt install make clang
+```
 
 Then, grab the Polkadot source code:
 
-   git clone https://github.com/paritytech/polkadot.git
-   cd polkadot
+```
+git clone https://github.com/paritytech/polkadot.git
+cd polkadot
+```
 
 Then build the code:
 
-   ./build.sh  # Builds the WebAssembly binaries
-   cargo build # Builds all native code
+```
+./build.sh  # Builds the WebAssembly binaries
+cargo build # Builds all native code
+```
 
 You can run the tests if you like:
 
-   cargo test --all
+```
+cargo test --all
+```
 
 You can start a development chain with:
 
-   cargo run -- --chain=dev --validator --key Alice
+```
+cargo run -- --chain=dev --validator --key Alice
+```