Updated GitHub guide with sourcetree and removed empty readme file.
Added lesson 2 slides.
Updated lesson 2 slides, removing nibs.
Merge branch 'master' of https://github.com/ga-students/MOB-DC-01

* 'master' of https://github.com/ga-students/MOB-DC-01:
  Updated lesson 2 slides, removing nibs.
  Added lesson 2 slides.
  Updated GitHub guide with sourcetree and removed empty readme file.
Saving my first project.