Added some documentation regarding encoding+decoding of structs based off of the encoding/json docs
Added some documentation regarding encoding+decoding of structs based off of the encoding/json docs

dancannon/gorethink,GoRethink/gorethink,brendanobrienesq/gorethink,the-control-group/gorethink-v1.15,dancannon/gorethink,SKatiyar/gorethink,dancannon/gorethink,GoRethink/gorethink,GoRethink/gorethink