Created a helper script to build comment help based comments

[kungfoome]

This is still not quite complete. Need to add some tests and clean some code up, but it's a start

Task list

• Added an entry under the Unreleased section of the change log in the CHANGELOG.md.
  Entry should say what was changed, and how that affects users (if applicable).
• Documentation added/updated in README.md.
• Comment-based help added/updated for all new/changed functions.
• Localization strings added/updated in all localization files as appropriate.
• Unit tests added/updated.
• New/changed code adheres to DSC Resource Style Guidelines and Best Practices.

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This change is 

[codecov-io]

Codecov Report

Merging #341 into dev will decrease coverage by 6%.
The diff coverage is 0%.

@@         Coverage Diff          @@
##            dev   #341    +/-   ##
====================================
- Coverage    79%    73%    -7%     
====================================
  Files        12     14     +2     
  Lines      1776   1921   +145     
  Branches      2      2            
====================================
  Hits       1420   1420            
- Misses      354    499   +145     
  Partials      2      2

[PlagueHO]

Awesome stuff @kungfu71186 - sorry I missed this! Will review this week.

[johlju]

@kungfu71186 We should move this to the module DscResource.DocGenerator and create a build task for it (see other task in that module).