alter npm version requirement to allow for newer versions (#4870)

Co-authored-by: Samuel Skeen <[email protected]>

Author: cwadrupldijjit

package.json

@@ -130,6 +130,6 @@
   },
   "engines": {
     "node": ">= 4.6.0",
-    "npm": "^2.15.9"
+    "npm": ">= 2.15.9"
   }
 }