chore(package): update fbp-spec to version 0.5.0

Author: greenkeeper[bot]

package.json

@@ -22,7 +22,7 @@
   "devDependencies": {
     "chai": "^4.0.1",
     "coffee-script": "^1.10.0",
-    "fbp-spec": "^0.4.1",
+    "fbp-spec": "^0.5.0",
     "grunt": "^1.0.1",
     "grunt-coffeelint": "^0.0.16",
     "grunt-contrib-watch": "^1.0.0",