add gulp as a peerDep
Upgrade gulp-connect, gulp-jshint

JSHint seems to have changed reporters, gulp-connect added support for
middlewares.
Add gulp-useref to html task. Add usemin blocks. Add bundle task. Update styles, scripts tasks.
Merge pull request #16 from jonkemp/useref

Add gulp-useref to html task. Add usemin blocks. Add bundle task. Update...
bumping package
Change package keyword from grunt to gulp
Merge remote-tracking branch 'upstream/master'

* upstream/master:
  Change package keyword from grunt to gulp
  bumping package
  Add gulp-useref to html task. Add usemin blocks. Add bundle task. Update styles, scripts tasks.
  Upgrade gulp-connect, gulp-jshint
  add gulp as a peerDep