added beginning of JSON output
Added basic JSON output for line differences
Secondary Diff working- call ses(a, b, true) to enable
added comments and edited attribution
Added JSON output for secondary diff
fixed semicolon
changed variable name to avoid conflict
slight JSON update for a to correspond to student and b to correspond to instructor
Merge branch 'grading-modules' of https://github.com/JFrei86/HWserver

* 'grading-modules' of https://github.com/JFrei86/HWserver:
  slight JSON update for a to correspond to student and b to correspond to instructor
  changed variable name to avoid conflict
  fixed semicolon
  Added JSON output for secondary diff
  added comments and edited attribution
  Secondary Diff working- call ses(a, b, true) to enable
  Added basic JSON output for line differences
  added beginning of JSON output