Added extra info on parsing more complex json.

Decoding-JSON.md

@@ -145,3 +145,33 @@ You can also iterate through the key-value pairs of the object:
       Serial.println(it->key);
       Serial.println(it->value.asString());
     }
+
+## Advanced Example
+
+Let's take what we've learned above up a gear :) 
+
+Our JSON array is now:
+
+    char json[] = "{\"data\":{\"time\":{\"day\":1,\"month\":3,\"year\":16,\"hours\":9,\"mins\":59,\"secs\":14}}}";
+
+We parse it and check it as before with:
+
+    JsonObject& root = jsonBuffer.parseObject(json);
+    // Test if parsing succeeds.
+    if (!root.success()) {
+         Serial.println("parseObject() failed");
+    return;
+    }
+
+Now to get the data, we can follow the object downwards, just like you would do with PHP etc...:
+
+    int day     = root["data"]["time"]["day"];
+    int month   = root["data"]["time"]["month"];
+    int year    = root["data"]["time"]["year"];
+    int hours   = root["data"]["time"]["hours"];
+    int mins    = root["data"]["time"]["mins"];
+    int secs    = root["data"]["time"]["secs"];
+
+This allows for more complex data to be processed, the time as in this example or numerous values from a single function. Just make sure your jsonBuffer is large enough to handle the larger objects!
+
+See the file called "JsonParserExample_Advanced.ino" in "ArduinoJson/examples/JsonParserExample/"