Update Timezone to 0.0.16.

Update Timezone from 0.0.14 to 0.0.16.

Timezone 0.0.16 has been updated to include the `tzdata2012j` version of
the IANA timezone database, plus support for many more locales was added
in Timezone 0.0.15.
Merge pull request #4 from bigeasy/timezone-0.0.16

Update Timezone to 0.0.16.