Add a BIG disclaimer regarding the dangerousness of the tool

[SakiiR]

It is cool to gain speed but careful ! 🚒

When scanning a single IP, opening as much file descriptors (sockets) on the specified IP can be harmfull.

Example: "Do not use this tool against sensitive infrastructure blah blah blah"

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[bee-san]

Thank you! I will add this to the next release :)
I didn't expect people to actually use this on real world targets, this was originally just for my CTF team 😅

[bee-san]

@SakiiR Should I add this to #usage of the README and the help menu? And perhaps if file limit ls larger than X, it prints the warning too?

[bee-san]

Adder disclaimer to README
https://github.com/brandonskerritt/RustScan/blob/master/README.md#%EF%B8%8F-warning

[bee-san]

This is now in the help menu:

RustScan 1.2.0
Bee https://github.com/brandonskerritt
Fast Port Scanner built in Rust
WARNING Do not use this program against sensitive infrastructure. The specified server may not be able to handle this
many socket connections at once.

[bee-san]

Okay, it warns 4 times:

Once in help menu
Once on the README
When it suggests upping the ulimit, it warns (it does this twice in the code)