Include viz.es.js in GitHub release.

Author: mdaines

deploy.rb

@@ -7,7 +7,7 @@
 repo_slug = ENV["TRAVIS_REPO_SLUG"]
 release_tag_name = ENV["TRAVIS_TAG"]
 build_dir = ENV["TRAVIS_BUILD_DIR"]
-asset_paths = ["viz.js", "full.render.js", "lite.render.js"].map { |name| File.join(build_dir, name) }
+asset_paths = ["viz.js", "viz.es.js", "full.render.js", "lite.render.js"].map { |name| File.join(build_dir, name) }
 
 # Validate that version numbers match