docs: launch local network

README.md

@@ -16,3 +16,17 @@ awesome things.
 
 Pop supports Polkadot native contracts (`pallet-contracts`), enabling developers to build with more performant and
 secure smart contract languages (such as [ink!](https://use.ink/)).
+
+# Launching Local Network
+## Installation
+You can install the Pop CLI as follows:
+```shell
+cargo install --git https://github.com/r0gue-io/pop-cli
+```
+
+## Spawn Network
+You can spawn a local network as follows:
+```shell
+pop up -c ./networks/rococo.toml
+```
+Note: `pop` will automatically source the necessary `polkadot` binaries. Currently, these will have to be built if on a non-linux system.