Update md5 to 2.0.0

Author: janruehling

package.json

@@ -19,7 +19,7 @@
   "dependencies": {
     "npm": "^2.7.1",
     "n": "^1.3.0",
-    "md5": "^1.0.0",
+    "md5": "^2.0.0",
     "async": "^1.0.0",
     "fs-extra": "^0.8.1"
   },