Added installation configuration for Gentoo (#820)
Added installation configuration for Gentoo (#820)

* Added installation configuration for Gentoo

* Added check for sudo command
anthraxx/pwndbg,pwndbg/pwndbg,pwndbg/pwndbg,anthraxx/pwndbg,anthraxx/pwndbg,anthraxx/pwndbg,pwndbg/pwndbg,pwndbg/pwndbg