Use q-io@2 to exclude wrongly implemented "Array.prototype.find"-method

This method is injected in the `collections`-package as array-shim, which is
a dependency of q-io. Version 1.x of `collections` implements the method with
the semantics of `Array.prototype.findIndex` instead. This leads to problems
with other packages that rely on the implementation as defined in the ES6-Standard

See also: montagejs/collections#139

package.json

@@ -35,7 +35,7 @@
     "minimatch": "^3.0.0",
     "q": "^1.4.1",
     "q-deep": "^1.0.1",
-    "q-io": "^1.13.1"
+    "q-io": "2"
   },
   "standard": {
     "ignore": [