Update travis

.travis.yml

@@ -1,8 +1,7 @@
-sudo: required
-dist: trusty
 language: node_js
+
 node_js:
-  - '8.7.0'
+   - node
 
 addons:
 apt:
@@ -18,10 +17,8 @@ before_install:
   - sh -e /etc/init.d/xvfb start
 
 before_script:
-  - npm install -g @angular-cli
-  - npm install -g karma
-  - npm install
-  - ng build
-
+   - npm install -g --silent @angular/cli
+   - ng build
 
 script: karma start config/karma.conf.js --single-run
+