Update devDependencies and peerDependencies

Author: tomasz-oponowicz

package.json

@@ -24,15 +24,15 @@
     "test": "grunt"
   },
   "devDependencies": {
-    "grunt": "~0.4.5",
+    "grunt": "^1.0.0",
     "grunt-cli": "^1.2.0",
-    "grunt-contrib-clean": "^0.5.0",
-    "grunt-contrib-jshint": "^0.9.2",
-    "grunt-contrib-nodeunit": "^0.3.3",
+    "grunt-contrib-clean": "^1.0.0",
+    "grunt-contrib-jshint": "^1.0.0",
+    "grunt-contrib-nodeunit": "^1.0.0",
     "javascript-obfuscator": "0.7.2"
   },
   "peerDependencies": {
-    "grunt": "~0.4.5",
+    "grunt": ">=0.4.5",
     "javascript-obfuscator": ">=0.7.2"
   },
   "keywords": [