Build: Upgrade to grunt-html 6.0.0

Closes jquerygh-1680

Author: scottgonzalez

.travis.yml

@@ -1,4 +1,5 @@
-sudo: false
+sudo: required
+dist: trusty
 language: node_js
 node_js:
   - "0.12"

package.json

@@ -63,7 +63,7 @@
 		"grunt-contrib-requirejs": "0.4.4",
 		"grunt-contrib-uglify": "0.11.1",
 		"grunt-git-authors": "3.1.0",
-		"grunt-html": "4.0.1",
+		"grunt-html": "6.0.0",
 		"grunt-jscs": "2.1.0",
 		"load-grunt-tasks": "3.4.0",
 		"rimraf": "2.5.1",