Exposing vendored packages

[wholien]

I'm getting this issue when using this package: http://stackoverflow.com/questions/38091816/packages-type-cannot-be-used-as-the-vendored-packages-type

It seems that because go-yelp uses the null package in defining structs, the vendored package is exposed and causing this issue. After thinking about it and talking with others, two potential solutions seem to be either 1) not vendoring the package at all, or 2) keeping the vendored package, but create public functions that can be accessed to create the structs defined in go-yelp.

Do you have any thoughts?

[salpalvv]

imported nicerobot's fork with the PR and the below is working

options := yelp.SearchOptions{
         GeneralOptions: &yelp.GeneralOptions{
             Term: "food",
         },
         CoordinateOptions: &yelp.CoordinateOptions{
             Latitude:  yelp.FloatFrom(latitude),
             Longitude: yelp.FloatFrom(longitude),
         },
      }