chore(package): update steal-tools to version 2.2.5

Closes #152

Author: greenkeeper[bot]

package.json

@@ -34,7 +34,7 @@
     "jshint": "^2.7.0",
     "steal": "^1.0.0",
     "steal-qunit": "^2.0.0",
-    "steal-tools": "^1.0.0",
+    "steal-tools": "^2.2.5",
     "testee": "^0.9.0"
   },
   "repository": {