Travis CI: Add database tests

.travis.travelynx.conf

@@ -0,0 +1,12 @@
+{
+	cache => {
+		schedule => '/tmp/dbf-iris-main',
+		realtime => '/tmp/dbf-iris-realtime',
+	},
+	db => {
+		host => 'localhost',
+		database => 'travelynx_ci_test',
+		user => 'postgres',
+		password => '',
+	},
+};

.travis.yml

@@ -5,6 +5,17 @@ perl:
   - "5.24"
   - "5.22"
   - "5.20"
+services:
+  - postgresql
+addons:
+  apt:
+    packages:
+      - libcache-perl
+      - libpq-dev
+      - libxml2-dev
+before_script:
+  - cp .travis.travelynx.conf travelynx.conf
+  - psql -c 'create database travelynx_ci_test;' -U postgres
 script:
   - carton install
   - carton exec prove -lv