Issues with README.md

[devjayati]

1. "embedded system" instead of "on-board computer"?
2. "science it supports grinds to a halt" --- sounds weird
3. what is LAN cable? do you mean cat 6 rj45 or other cat cables?

Other edits done in file. Close if resolved.

[kausrini]

• If users choose to use wired internet connection, ask them to use ethernet usb adapter to connect via the raspberry pi's usb port.
• Need to inform users to enable RDP in their instrument.
• Need to add instructions for configuring email functionality @adv16