add example on how to install packages from git
add example on how to install packages from git

this could possibly be amended with other options to install non-local non-hackage packages.
Fuuzetsu/stack,luigy/stack,Heather/stack,phadej/stack,deech/stack,rubik/stack,deech/stack,rubik/stack,Blaisorblade/stack,AndreasPK/stack,anton-dessiatov/stack,narrative/stack,juhp/stack,narrative/stack,MichielDerhaeg/stack,achernyak/stack,harendra-kumar/stack,AndreasPK/stack,Heather/stack,martin-kolinek/stack,martin-kolinek/stack,MichielDerhaeg/stack,sjakobi/stack,phadej/stack,mrkkrp/stack,juhp/stack,keent/stack,AndrewRademacher/stack,mrkkrp/stack,AndrewRademacher/stack,luigy/stack,achernyak/stack,anton-dessiatov/stack,keent/stack,harendra-kumar/stack,sjakobi/stack,Blaisorblade/stack,Fuuzetsu/stack