Bump to 1.0.0-beta.4 for fastboot-express-middleware@1.0.0-beta.7

Author: danmcclain

package.json

@@ -1,6 +1,6 @@
 {
   "name": "ember-cli-fastboot",
-  "version": "1.0.0-beta.3",
+  "version": "1.0.0-beta.4",
   "description": "Server-side rendering for Ember.js apps",
   "directories": {
     "doc": "doc",
@@ -65,7 +65,7 @@
     "broccoli-merge-trees": "^1.1.1",
     "broccoli-plugin": "^1.2.1",
     "broccoli-stew": "^1.2.0",
-    "fastboot-express-middleware": "1.0.0-beta.6",
+    "fastboot-express-middleware": "1.0.0-beta.7",
     "ember-cli-babel": "^5.1.5",
     "ember-test-helpers": "^0.5.22",
     "express": "^4.8.5",