Installation documentation needs to be updated

[Outpox]

Hey there, I wanted to give snatch a try and so I followed the README to install it.

It it suggested to do as follow : cargo install --git https://github.com/derniercri/snatch.git but once installed I noticed that it was the master version which got installed since:

▶ snatch -V       
Usage:
    snatch [OPTIONS]
snatch: Unknown short option "V"

So I deleted it and reinstalled it with cargo install --git https://github.com/derniercri/snatch.git --branch devel and it solved it for me. :-)

▶ snatch -V
Snatch 0.1.2

[k0pernicus]

Hi @Outpox,
Thank you for this issue :-)
I will update the documentation this afternoon ;-)

[k0pernicus]

According to the work of @xvw (#54), the documentation has been updated ;-)
Thanks a lot again @Outpox and @xvw !