Installer doesn't work on Linux mint

[Matzz]

When I try to install sming on Linux I get Unsupported distribution error.
I would to check if apt exists rather than checking if linux distro is debian.
Eg
which apt | wc -l

For me I solved that by adding:

elif [ -n "$(grep linuxmint /etc/os-release)" ]; then
    DIST=debian
    PKG_INSTALL="sudo apt-get install -y"

to install script

[slaff]

@Matzz can you create a PR with your changes?

[Matzz]

@slaff #2523

[slaff]

@Matzz Thanks a lot for the PR. It is now merged.