Covered a few of the provider "recipes".
Adding git commands at top of labs
Merge branch 'develop' into slide-review

* develop:
  Small corrections and fixes.
  Finished lecture 6
  Finished promises.
  Started working on promises.
Finishing up lecture 7
Merge branch 'feature/lecture-07' into slide-review

* feature/lecture-07:
  Finishing up lecture 7
  Covered a few of the provider "recipes".
Merge pull request #104 from objectpartners/slide-review

Slide review