Update README.md

doc/README.md

@@ -1,13 +1,18 @@
-# Documentation 
+# Mattermost Documentation 
 
 ## Administrator Documentation 
 
 ### Installation 
 
-- [Install Requirements](doc/install/requirements.md)
-- [Local Machine Setup ](doc/install/single-container-install.md)
-- [AWS Elastic Beanstalk Setup](doc/install/aws-ebs-setup.md)
+- [Software and Hardware Requirements](install/requirements.md)
+- [Local Machine Setup ](install/single-container-install.md)
+- [AWS Elastic Beanstalk Setup](install/aws-ebs-setup.md)
 
 ### Configuration 
 
-- [GitLab SSO Configuration](integrations/sso/gitlab-sso.md) - Configure OAuth2 Single-Sign-On for GitLab.
+- [GitLab SSO Configuration](integrations/sso/gitlab-sso.md) 
+- [SMTP Email Setup](smtp-email-setup.md)
+
+## Developer Documentation 
+
+- [Mattermost Style Guide](developer/style-guide.md)