.yardopts in google-cloud-logging-1.5.2 vs .yardopts in google-cloud-logging-1.5.3

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