finished problem 5
Merge branch 'master' of https://github.com/nyucusp/gx5003-fall2013

# By Kara Leary (6) and Katherine Elliott (1)
# Via Kara Leary
* 'master' of https://github.com/nyucusp/gx5003-fall2013:
  4
  3
  2
  1c
  1b
  1a
  problem 1c