Dump table

function dump(table, indent)
    local indent = indent or ''
    for key, value in pairs(table) do
        io.write(indent, '[', tostring(key), ']') 
        if type(value) == "table" then
            io.write(':\n') dump(value, indent .. '\t')
        else
            io.write(' = ', tostring(value), '\n')
        end
    end
end