.travis.yml in solidus_gateway-1.1.0 vs .travis.yml in solidus_gateway-1.1.1

- old
+ new
@@ -1,14 +1,19 @@
 sudo: false
 cache: bundler
 language: ruby
-env:
-  - SOLIDUS_BRANCH=v1.1   DB=mysql
-  - SOLIDUS_BRANCH=v1.2   DB=mysql
-  - SOLIDUS_BRANCH=v1.3   DB=mysql
-  - SOLIDUS_BRANCH=master DB=mysql
-  - SOLIDUS_BRANCH=v1.1   DB=postgres
-  - SOLIDUS_BRANCH=v1.2   DB=postgres
-  - SOLIDUS_BRANCH=v1.3   DB=postgres
-  - SOLIDUS_BRANCH=master DB=postgres
 rvm:
-  - 2.1.8
+  - 2.3.1
+env:
+  matrix:
+    - SOLIDUS_BRANCH=v1.1 DB=postgres
+    - SOLIDUS_BRANCH=v1.2 DB=postgres
+    - SOLIDUS_BRANCH=v1.3 DB=postgres
+    - SOLIDUS_BRANCH=v1.4 DB=postgres
+    - SOLIDUS_BRANCH=v2.0 DB=postgres
+    - SOLIDUS_BRANCH=master DB=postgres
+    - SOLIDUS_BRANCH=v1.1 DB=mysql
+    - SOLIDUS_BRANCH=v1.2 DB=mysql
+    - SOLIDUS_BRANCH=v1.3 DB=mysql
+    - SOLIDUS_BRANCH=v1.4 DB=mysql
+    - SOLIDUS_BRANCH=v2.0 DB=mysql
+    - SOLIDUS_BRANCH=master DB=mysql