Missing .yml file for English

[yesthatguy]

As a workaround for #33 I'm directly calling translate on my timezone value:
t(ts.time_zone.name, scope: :timezones)

However, this doesn't work in English, and I explicitly need to provide the default:
t(ts.time_zone.name, scope: :timezones, default: ts.time_zone.name)

I think if we include an en.yml file with the names untranslated, we could leave off the default option.