refactor(serve:favicon) change favicon package

change static-favicon to serve-favicon because the npm install process
recommend to change it.

npm WARN deprecated static-favicon@1.0.2: use serve-favicon module

Signed-off-by: Yordis Prieto <yordis.prieto@gmail.com>
Merge pull request #461 from yordis/master

refactor(favicon) change favicon package