chore(grunt): bump Grunt to ^1.0.1

closes #1775

Author: Awk34

Diff for: app/templates/_package.json

@@ -94,7 +94,7 @@
     "run-sequence": "^1.1.0",
     "lazypipe": "^0.2.4",
     "wiredep": "^2.2.2",<% } /*end gulp*/ if(filters.grunt) { %>
-    "grunt": "~0.4.5",
+    "grunt": "^1.0.1",
     "grunt-wiredep": "^2.0.0",
     "grunt-concurrent": "^2.0.1",
     "grunt-contrib-clean": "^1.0.0",