fix postgis issue in travis

sheppard · sheppard · commit 91a5be7ac31a · 2017-09-12T15:07:33.000-05:00
diff --git a/.travis.yml b/.travis.yml
@@ -31,3 +31,8 @@ script:
  - ./runtests.sh
 services:
  - redis-server
+addons:
+  postgresql: "9.6"
+  apt:
+    packages:
+     - postgresql-9.6-postgis-2.3
