display before/after asset filesize info during minification task
make sure output css file can be named and improve gulp watch task
added very basic gulp help task that lists all the available tasks
Merge branch 'set_up_gulp'

* set_up_gulp:
  added very basic gulp help task that lists all the available tasks
  make sure output css file can be named and improve gulp watch task
  display before/after asset filesize info during minification task
added basic authentication