added build instructions

Author: CluEleSsUK

README.md

@@ -3,13 +3,31 @@
 This project contains all the software required for creating or participating in a distributed validator cluster for Ethereum using the [SSV project](https://github.com/bloxapp/ssv).
 It currently supports mainnet, holesky and hoodi - though holesky no longer supports the full validator registration lifecycle since got rekt.
 
-## cli
+## Development
+
+### Prerequisites
+- go 19 or newer
+
+### Building
+
+To build the sidecar from source run:
+```go
+go build -o ssv-sidecar ./sidecar/cmd/main.go
+```
+
+To build the user CLI from source run:
+```go
+go build -o ssv-dkg ./cli/cmd/main.go
+```
+
+## Usage
+### cli
 For users with ETH to stake who wish to create a validator cluster, [read the CLI readme](./cli/README.md)
 
-## sidecar
+### sidecar
 For SSV node operators who wish to opt into distributed key generation opportunities, [read the sidecar readme](./sidecar/README.md)
 
-## tools
+### tools
 The tools module contains useful applications for interacting with other parts of the project.
 
-[./tools/key_verifier](./tools/key_verifier) is a tool used by the GitHub actions for verifying the keys of operators added to the [operators list](./nodes/operators.json).
+[./tools/key_verifier](./tools/key_verifier) is a tool used by the GitHub actions for verifying the keys of operators added to the [operators list](./nodes/operators.json).