Update README.md

Author: webron

README.md

@@ -102,3 +102,6 @@ Apigee donated the code to create the swagger-node project in 2015.
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
+
+---
+<img src="http://swagger.io/wp-content/uploads/2016/02/logo.jpg"/>