Marc Chamberlin

Wrong error raised for Geonames Lookup

1

According to README: ``` Timezone.lookup(10, 10) => Timezone::Error::Geonames: api limit reached Timezone.lookup(10, 100000) => Timezone::Error::InvalidZone Timezone.lookup(10, 100000, Timezone::NilZone.new) => # Timezone.lookup(10, 100000){ |name| "#{name} is invalid" } => " is...