Specify correct yarn version in package.json

Mat Brown · Mat Brown · commit 5aca325b1034 · 2017-09-04T14:03:36.000-04:00
diff --git a/package.json b/package.json
@@ -152,7 +152,7 @@
   },
   "engines": {
     "node": "7.6.0",
-    "yarn": "0.24.6"
+    "yarn": "0.27.5"
   },
   "scripts": {
     "postinstall": "bower install",
