Merge branch 'master' of https://github.com/JFrei86/HWserver into grading-modules

* 'master' of https://github.com/JFrei86/HWserver:
  Updated Site Preview
Merge branch 'master' of https://github.com/JFrei86/HWserver into grading-modules

* 'master' of https://github.com/JFrei86/HWserver:
  Added file to run mass diffs on files
  added code to read in file contents and added headers to the modules header file
  Fixed template issue for vectors of vectors
Changed file naming and read in instructor file
Added sample input and JSON files
added comments to running test cases file