docs: fix README.md (#97)

Author: matthyk

Diff for: README.md

@@ -103,7 +103,7 @@ The JSON structure returned by the `overview` method is like the following:
     // it contains the same structure we are describing
   ], 
   "decorators": { // all the instance decorators | app.decorate('foo-bar', 42)
-    "decorate": [ { "name": "foo-bar" } ], // the decorators' name
+    "decorate": [ { "name": "foo-bar", "type": "number" } ], // the decorators' name
     "decorateRequest": [], // app.decorateRequest('foo-bar', 42)
     "decorateReply": [] // app.decorateReply('foo-bar', 42)
   },
@@ -248,7 +248,7 @@ Here an example of the cleaned output:
           "name": "async function (instance, opts) { -- instance.decorateReply('oneRep', {})",
           "decorators": {
             "decorateReply": [
-              { "name": "oneRep" }
+              { "name": "oneRep", "type": "object" }
             ]
           }
         }