Update template

[johlju]

Pull Request (PR) description

• Rename Tests/Unit folder to use upper case on first letter.
• Update appveyor.yml to use the default template.
• Added default template files .codecov.yml, .gitattributes, and .gitignore, and .vscode folder.

This Pull Request (PR) fixes the following issues

Task list

• [x] Added an entry under the Unreleased section of the change log in the README.md. Entry should say what was changed, and how that affects users (if applicable).
• [ ] Resource documentation added/updated in README.md.
• [ ] Resource parameter descriptions added/updated in README.md, schema.mof and comment-based help.
• [ ] Comment-based help added/updated.
• [ ] Localization strings added/updated in all localization files as appropriate.
• [ ] Examples appropriately added/updated.
• [ ] Unit tests added/updated. See DSC Resource Testing Guidelines.
• [ ] Integration tests added/updated (where possible). See DSC Resource Testing Guidelines.
• [ ] New/changed code adheres to DSC Resource Style Guidelines and Best Practices.

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This change is 

[codecov-io]

Codecov Report

Merging #54 into dev will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##              dev      #54   +/-   ##
=======================================
  Coverage   85.03%   85.03%           
=======================================
  Files           8        8           
  Lines         381      381           
  Branches        9        9           
=======================================
  Hits          324      324           
  Misses         48       48           
  Partials        9        9

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