Add J-Link to README
This crate provides a cargo subcommand to flash ELF binaries onto ARM chips.
-Various chip families including but not limited to **nRF5x, STM32 and LPC800** can be flashed using a **DAPLink** or an **ST-Link**. To check if your specific chip is supported, use `cargo flash --list-chips`
+Various chip families including but not limited to **nRF5x**, **STM32** and **LPC800** can be flashed using **DAPLink**, **ST-Link** or **J-Link**. To check if your specific chip is supported, use `cargo flash --list-chips`
## Installation
