Merge pull request #22 from gruntjs-updater/peerDep

Update peerDependencies to support Grunt 1.0

Author: kennyt

package.json

@@ -39,7 +39,7 @@
     "mocha": "^2.2.5"
   },
   "peerDependencies": {
-    "grunt": "~0.4.5"
+    "grunt": ">=0.4.0"
   },
   "keywords": [
     "gruntplugin",