added to presentation-2
Merge branch 'congestion' of http://github.com/aomanaloto1/thesis into congestion

* 'congestion' of http://github.com/aomanaloto1/thesis:
  added to presentation-2
Merge branch 'congestion' of http://github.com/aomanaloto1/thesis into congestion

* 'congestion' of http://github.com/aomanaloto1/thesis:
  Edited thesis statement
change thesis statement