To install, run the following command in your Elasticsearch home directory on a *nix system:
./bin/plugin install https://github.com/elastic/elasticsearch-migration/releases/download/v2.0.4/elasticsearch-migration-2.0.4.zip
Or the equivalent on a Windows machine:
.\bin\plugin install https://github.com/elastic/elasticsearch-migration/releases/download/v2.0.4/elasticsearch-migration-2.0.4.zip