Add jshint to Travis CI config.

props jorbin.
fixes #26446.


git-svn-id: https://develop.svn.wordpress.org/trunk@27267 602fd350-edb4-49c9-b593-d223f7449a82

.travis.yml

@@ -16,4 +16,4 @@ before_script:
     - npm install -g grunt-cli
     - npm install
 
-script: grunt test
+script: grunt travis 

Gruntfile.js

@@ -426,6 +426,7 @@ module.exports = function(grunt) {
 		['build', 'copy:qunit', 'qunit']);
 
 	grunt.registerTask('test', 'Runs all QUnit and PHPUnit tasks.', ['qunit:compiled', 'phpunit']);
+	grunt.registerTask('travis', ['jshint', 'test']);
 
 	// Default task.
 	grunt.registerTask('default', ['build']);