Makefile in twilio-ruby-5.0.0.rc21 vs Makefile in twilio-ruby-5.0.0.rc22

@@ -5,9 +5,12 @@
 	bundle install
 
 test:
 	bundle exec rake spec
 
+docs:
+	yard doc
+
 authors:
 	echo "Authors\n=======\n\nA huge thanks to all of our contributors:\n\n" > AUTHORS.md
 	git log --raw | grep "^Author: " | cut -d ' ' -f2- | cut -d '<' -f1 | sed 's/^/- /' | sort | uniq >> AUTHORS.md
 
 deploy: