Add Junit Documentations for Shell, Uniq, and Wc… And also add Execution Finish notification
Merge branch 'master' of https://github.com/azatris/cs4218

# By Silver Taza
# Via Silver Taza
* 'master' of https://github.com/azatris/cs4218:
  Removed a bug introduced last commit and now should support multiple file sizes