Bump npm deps

[TravisCI] Remove redundant gulp dep
Add client route for frontend

Misc syntax cleanup

  - Update require order
  - Update gulpfile doc message
  - Syntax sugar for `/api` Router declaration
Upgrade favicon middleware

  - Use serve-favicon
  - Set resource path and max-age
  - Add static favicon resource
Dummy content
Merge pull request #18 from gfestari/client

Add client routes for frontend