added mongodb to travis.yml

.travis.yml

@@ -1,8 +1,9 @@
 services:
     - redis-server
+    - mongodb
 before_install:
     - npm i --production
-    - node app --setup="{\"url\":\"http://127.0.0.1:4567/\",\"secret\":\"abcdef\",\"database\":\"redis\",\"redis:host\":\"127.0.0.1\",\"redis:port\":6379,\"redis:password\":\"\",\"redis:database\":0,\"admin:username\":\"admin\",\"admin:email\":\"test@example.org\",\"admin:password\":\"abcdef\",\"admin:password:confirm\":\"abcdef\"}" --ci="{\"host\":\"127.0.0.1\",\"port\":6379,\"database\":0}"
+    - node app --setup="{\"url\":\"http://127.0.0.1:4567/\",\"secret\":\"abcdef\",\"database\":\"mongo\",\"mongo:host\":\"127.0.0.1\",\"mongo:port\":27017,\"mongo:username\":\"\",\"mongo:password\":\"\",\"mongo:database\":0,\"redis:host\":\"127.0.0.1\",\"redis:port\":6379,\"redis:password\":\"\",\"redis:database\":0,\"admin:username\":\"admin\",\"admin:email\":\"test@example.org\",\"admin:password\":\"abcdef\",\"admin:password:confirm\":\"abcdef\"}" --ci="{\"host\":\"127.0.0.1\",\"port\":6379,\"database\":0}"
 language: node_js
 node_js:
     - "0.11"