upgrade deps

package.json

@@ -25,12 +25,12 @@
   ],
   "dependencies": {
     "batch": "~0.5.2",
-    "chalk": "~1.0.0",
-    "debug": "~2.1.3",
+    "chalk": "~1.1.1",
+    "debug": "~2.2.0",
     "enstore": "~1.0.1",
     "is-url": "~1.2.0",
-    "isobject": "~1.0.0",
-    "object-assign": "~2.0.0",
+    "isobject": "~2.0.0",
+    "object-assign": "~4.0.1",
     "x-ray-crawler": "~2.0.1",
     "x-ray-parse": "~1.0.1"
   },
@@ -42,7 +42,7 @@
     "mocha": "latest",
     "mocha-lcov-reporter": "~1.2.0",
     "multiline": "~1.0.2",
-    "rimraf": "~2.3.2",
+    "rimraf": "~2.5.2",
     "standard": "~6.0.8",
     "x-ray-phantom": "~1.0.0"
   },