Make shell commands copyable in the readme

[LitoMore]

Changes

• Remove $ prefix from shell commands
• Specify the language for code block

[vadimdemedes]

Remove $ prefix from shell commands

I'd prefer to leave it there, I like how it makes it clear that it's a shell command.

Specify the language for code block

Doesn't seem like sh language adds any highlighting?

[LitoMore]

I'd prefer to leave it there, I like how it makes it clear that it's a shell command.

Since GitHub launched the copy-text feature for code blocks, no $ will more convenient. Users can copy-paste and run.

Doesn't seem like sh language adds any highlighting?

Yes, it's not highlighted. But just for now. Even if it doesn't have any highlighting, we can still specify a language for it. Just in case.

[vadimdemedes]

Ok sounds good. Thanks!