.travis.yml in superstore-2.3.0 vs .travis.yml in superstore-2.4.0

@@ -1,23 +1,13 @@
 language: ruby
 rvm:
-- 2.1.10
-- 2.2.5
 - 2.3.1
 sudo: required
 dist: trusty
 cache: bundler
-before_install:
-# https://github.com/travis-ci/travis-ci/issues/4264
-- sudo cp /etc/postgresql/9.4/main/pg_hba.conf /tmp
-- sudo add-apt-repository "deb http://apt.postgresql.org/pub/repos/apt/ $(lsb_release -cs)-pgdg 9.5"
-- sudo apt-key adv --keyserver keys.gnupg.net --recv-keys 7FCC7D46ACCC4CF8
-- sudo apt-get update
-- sudo service postgresql stop
-- for version in 9.1 9.2 9.3 9.4; do sudo pg_dropcluster --stop $version main; done
-- sudo apt-get remove --purge --yes postgresql-9.[1234]
-- sudo apt-get install --no-install-recommends --yes postgresql-client-9.5 postgresql-9.5
-- sudo apt-get autoremove --yes
-- sudo cp /tmp/pg_hba.conf /etc/postgresql/9.5/main/
-- sudo service postgresql restart
-- sudo -u postgres createuser -s travis
-- sudo -u postgres createdb -O travis travis
+gemfile:
+- Gemfile
+- Gemfile-rails4.2
+addons:
+  postgresql: 9.5
+services:
+- postgresql