database_postgresql.yml.erb in potassium-2.2.0

- old
+ new

@@ -13,13 +13,11 @@
 test:
   <<: *default
   database: <%= get(:underscorized_app_name) %>_test
 
 production: &deploy
-  adapter: mysql2
+  adapter: postgresql
   encoding: utf8
   min_messages: warning
   pool: <%%= [Integer(ENV.fetch("MAX_THREADS", 5)), Integer(ENV.fetch("DB_POOL", 5))].max %>
   timeout: 5000
   url: <%%= ENV.fetch("DATABASE_URL", "") %>
-
-staging: *deploy