chore(package): update wreck to version 7.0.0

http://greenkeeper.io/
diff --git a/package.json b/package.json
index 44d1c9c..ddb50d2 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
     "osenv": "~0.1.0",
     "prettyjson": "^1.1.3",
     "valid-url": "~1.0.9",
-    "wreck": "~5.6.0",
+    "wreck": "~7.0.0",
     "xtend": "~4.0.0"
   },
   "bundleDependencies": [