Adds script that tests publishing

Author: flovilmart

.travis.yml

@@ -1,8 +1,8 @@
 language: node_js
 node_js:
-- '4.4'
-- '5.7'
-- '6.1'
+- '6.11'
+- '8.8'
+before_script: ./scripts/before_script.sh
 cache:
   directories:
     - node_modules

scripts/before_script.sh

@@ -0,0 +1,5 @@
+#!/bin/sh
+test -f Parse-Dashboard/public/bundles/dashboard.bundle.js || exit 1
+test -f Parse-Dashboard/public/bundles/login.bundle.js || exit 1
+test -f Parse-Dashboard/public/bundles/sprites.svg || exit 1
+test -d Parse-Dashboard/public/bundles/img || exit 1