Update README.md

## Installation

### Deployment with OpenWrt (e.g. Gl.iNet device)

- Step 1: Download the Gl.iNet SDK

- Step 1: Download the Gl.iNet SDK (see https://github.com/gl-inet/sdk)

```

git clone https://github.com/gl-inet/sdk.git 

cd ./sdk

git clone https://github.com/gl-inet/sdk.git gl_sdk

cd ./gl_sdk

```

- Step 2: List all available targets. We will use mt300n-v2 (target: ramips-1806) for the Gl.iNet Mango

- Step 2: List all available targets. We will use mt300n-v2 (target: ramips-1806) for the Gl.iNet mt300n-v2 Mango

```

./download.sh

./download.sh ramips-1806

```

- Step 3: Build the SDK for the Gl.iNet Mango

- Step 3: Clone the ETSI ITS-bridge OpenWrt package

```

./builder.sh -t ramips-1806

cd ./sdk/1806/ramips

git clone https://forge.etsi.org/rep/plugtests/its-plugtests/its-bridge.git package/its-bridge

```

- Step 4: Build the ETSI ITS-bridge OpenWrt package

- Step 4: Update the configuration using menuconfig. In Utilites section, it_bridge shall be present, add it in the list of the package to be compiled

```

cd ./1806/ramips/

git clone https://forge.etsi.org/rep/plugtests/its-plugtests/its-bridge.git package/its-bridge

make package/its_bridge/compile V=s

make menuconfig

```

- Step 5: Build the SDK for the Gl.iNet Mango

```

cd -

./builder.sh -t ramips-1806 -d ./sdk/1806/ramips

```

- Step 6: Install the package on the Gl.iNet mt300n-v2 Mango device

### Deployment on Linux box device (e.g. NanoPI R2S)

See script/install.sh for a complete installation: