chore(package): update microflo to version 0.6.4

Closes #16

Author: greenkeeper[bot]

package.json

@@ -21,7 +21,7 @@
     "coffee-script": "^1.12.5",
     "fbp": "^1.5.0",
     "mocha": "^3.2.0",
-    "microflo": "^0.5.2",
+    "microflo": "^0.6.4",
     "microflo-core": "^0.5.0"
   }
 }