Merge branch 'master' into update-turbocarto

.travis.yml

@@ -1,9 +1,9 @@
-dist: trusty # only environment that supports Postgres 9.5 at this time
-sudo: required
+dist: trusty
 addons:
   postgresql: "9.5"
   apt:
     packages:
+      - postgresql-9.5-postgis-2.3
       - postgresql-plpython-9.5
       - pkg-config
       - libcairo2-dev
@@ -22,9 +22,3 @@ env:
 language: node_js
 node_js:
   - "0.10"
-
-notifications:
-  irc:
-    channels:
-      - "irc.freenode.org#cartodb"
-    use_notice: true