Update ember-cli-deploy-display-revisions version

Author: lukemelia

package.json

@@ -19,7 +19,7 @@
   ],
   "dependencies": {
     "ember-cli-deploy-build": "0.1.1",
-    "ember-cli-deploy-display-revisions": "0.2.0",
+    "ember-cli-deploy-display-revisions": "0.2.1",
     "ember-cli-deploy-gzip": "0.2.3",
     "ember-cli-deploy-redis": "0.3.0",
     "ember-cli-deploy-s3": "0.2.2",