Added adminOnly auth option and auth middleware tests

package.json

@@ -188,13 +188,13 @@
     "webpack": "1.13.2"
   },
   "devDependencies": {
-    "babel-jest": "^20.0.0",
+    "babel-jest": "22",
     "enzyme": "2.8.2",
     "enzyme-to-json": "^1.5.1",
     "fetch-test-server": "^1.1.0",
     "flow-bin": "^0.49.1",
     "identity-obj-proxy": "^3.0.0",
-    "jest-cli": "^20.0.0",
+    "jest-cli": "22",
     "koa-webpack-dev-middleware": "1.4.5",
     "koa-webpack-hot-middleware": "1.0.3",
     "lint-staged": "^3.4.0",
@@ -203,4 +203,4 @@
     "raf": "^3.4.0",
     "react-test-renderer": "^16.1.0"
   }
-}
+}