Parse::Taxonomy::MaterializedPath::hashify()

• Turn the taxonomy into a hash

        my $hashified = $obj->hashify();

        {
            "|General Motors" => {                              "|Toyota" => {
                audience_size => "",                                audience_size => "",
                buyable => 0,                                       buyable => 0,
                cpm => "",                                          cpm => "",
                path => "|General Motors"                           path => "|Toyota"
            },                                                  },
            "|General Motors|Cadillac" => {                     "|Toyota|Camry" => {
                audience_size => 150000,                            audience_size => 600000,
                buyable => 1,                                       buyable => 1,
                cpm => "1.00",                                      cpm => "0.70",
                path => "|General Motors|Cadillac",                 path => "|Toyota|Camry",
            },                                                  },
            # ...                                               # ...
                                                            }