Added database creation to the readme

config/database.yml

@@ -13,13 +13,13 @@ default: &default
   adapter: mysql2
   encoding: utf8mb4
   pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %>
-  username: root
+  username: OpenSMTPD
   password: password
   host: localhost
 
 development:
   <<: *default
-  database: opensmtpd_dev
+  database: OpenSMTPD
 
 # Warning: The database defined as "test" will be erased and
 # re-generated from your development database when you run "rake".
@@ -50,6 +50,6 @@ test:
 #
 production:
   <<: *default
-  database: opensmtpd
-  username: opensmtpd
+  database: OpenSMTPD
+  username: OpenSMTPD
   password: <%= ENV["OPENSMTPD_RAILS_FRONTEND_DATABASE_PASSWORD"] %>