~singpolyma/dhall-rails

Allow function to select by environment

Probably preferrable to a record with one item per environemnt and lots
of duplication, is a function that will return the config for the
desired environment.
Update depedency versions
Build needs zlib for Nokogiri
Standard compliance is not relevant for dhall-rails

That just depends on the version of dhall-ruby in use
Finish README for current features