GitLab

Summary:
Added link to blog post about incremental decoder in the FairseqIncrementalDecoder class description.
Pull Request resolved: https://github.com/pytorch/fairseq/pull/662

Differential Revision: D15077845

Pulled By: myleott

fbshipit-source-id: f23294721739600e14feb2cca4ece95f2b968f44