Merge pull request #562 from devopsdays/greenkeeper/del-3.0.0

Update del to the latest version 🚀

Author: mattstratton

package.json

@@ -16,7 +16,7 @@
   "author": "Matt Stratton",
   "license": "MIT",
   "devDependencies": {
-    "del": "^2.2.2",
+    "del": "^3.0.0",
     "gulp": "^3.9.1",
     "gulp-cache": "^0.4.5",
     "gulp-htmlmin": "^3.0.0",