adding protractor options to fix travis failing

.travis.yml

@@ -15,6 +15,12 @@ before_install:
   - gem update --system
   - gem install sass --version "=3.3.7"
   - npm i nsp -g
+  - npm install protractor
+  - "export DISPLAY=:99.0"
+  - "sh -e /etc/init.d/xvfb start"
+  - 'node_modules/protractor/bin/webdriver-manager update --standalone --firefox'
+  - 'node_modules/protractor/bin/webdriver-manager start 2>&1 &'
+  - sleep 3
 after_script:
   - nsp audit-package
   - grunt coverage

protractor.conf.js

@@ -1,6 +1,14 @@
 'use strict';
 
 // Protractor configuration
-exports.config = {
+var config = {
   specs: ['modules/*/tests/e2e/*.js']
 };
+
+if (process.env.TRAVIS) {
+  config.capabilities = {
+    browserName: 'firefox'
+  };
+}
+
+exports.config = config;