localshred/protobuf — pull request #170 by localshred (2014-02-15 00:13:08+00:00)
Title: Use a primitive field mapping from symbol to field class

Generate “prettier” message code that uses symbols for all the
primitive types in the definition.

```ruby
optional ::Protobuf::Field::StringField, :bar, 1 end

optional :string, :foo, 1 end
```