Add gulp help, a task to list available tasks.
Merge remote-tracking branch 'upstream/master' into gulp-help

* upstream/master: (25 commits)
  added spof-o-matic - fix #44
  css logo fix
  added logo
  added github ribbon
  added critical - fix #41
  added fastly sponsoring
  as expected no quicker script loading
  tryout for loading js quicker
  fix for better touch behavior on mobile
  empty commit for triggering redeploy at heroku
  delayed github avatars loading after page load
  fix inline svg's
  added inline svg's and inline css
  Changed to Github URL so the stars will work
  removed github link png - will replace it with css or svg soon
  removed cdn url for local development
  added fastly cdn for assets
  fixed filter container on mobile
  fix for jumping mobile chrome?
  added filters sidebar - fix #26
  ...

Conflicts:
	gulpfile.js
	package.json
Switch default task to be help task.
Merge pull request #37 from rupl/gulp-help

Add gulp help, a task to list available tasks.