.yardopts in google-cloud-datastore-1.4.1 vs .yardopts in google-cloud-datastore-1.4.2

@@ -1,9 +1,18 @@
 --no-private
 --title=Google Cloud Datastore
 --exclude _pb\.rb$
 --markup markdown
 --markup-provider redcarpet
+--main OVERVIEW.md
 
 ./lib/**/*.rb
 -
-README.md
+OVERVIEW.md
+AUTHENTICATION.md
+EMULATOR.md
+LOGGING.md
+CONTRIBUTING.md
+TROUBLESHOOTING.md
+CHANGELOG.md
+CODE_OF_CONDUCT.md
+LICENSE