added more information about the $state service
Added a note about failing tests.
Merge branch 'develop' into feature/ui-router

* develop:
  Adding some review on callbacks.
  Adding some review on callbacks.
  Adding some review on callbacks.
  oops
  Added notes for UP environment
  Update lecture-11.jade
  Update lab-11-protractor.md
small fixes to directive
Merge branch 'develop' into feature/directive-fixes
small fixes to directive