add grunt sound to 'grunt watch'
Merge branch 'master' of github.com:WebDevStudios/wd_s

# By Camden Segal (1) and Justin Sternberg (1)
# Via Camden Segal
* 'master' of github.com:WebDevStudios/wd_s:
  Added submodule update grunt task and changed default grunt task to update, compile all, then watch
  Add "update_submodules" task