.travis.yml in directory_diff-0.4.3 vs .travis.yml in directory_diff-0.4.4

@@ -1,5 +1,24 @@
 language: ruby
-rvm:
-  - 2.3.0
-  - 2.3.1
+dist: xenial
+matrix:
+  include:
+    - name: "Run Ruby 2.4.4 against pg 9"
+      rvm: 2.4.4
+      addons:
+        postgresql: 9.6
+    - name: "Run Ruby 2.4.4 against pg 10"
+      rvm: 2.4.4
+      addons:
+        postgresql: 10
+    - name: "Run Ruby 2.5.1 against pg 9"
+      rvm: 2.5.1
+      addons:
+        postgresql: 9.6
+    - name: "Run Ruby 2.5.1 against pg 10"
+      rvm: 2.5.1
+      addons:
+        postgresql: 10
 before_install: gem install bundler -v 1.11.2
+script:
+  - bundle exec rake db:create
+  - bundle exec rake spec