Improved the documentation.
Changed ConditionObject to Condition.
Added week-5-assignment-4 grading driver.
Fixed typo.
Added Assessment-Description.txt
Fixed typos.
Merge remote-tracking branch 'upstream/master'

* upstream/master:
  Fixed typos.
  Added Assessment-Description.txt
  Fixed typo.
  Added week-5-assignment-4 grading driver.
  Changed ConditionObject to Condition.
  Improved the documentation.
Implemented assignment 4