Pull Request (PR) description

Added UTF8BOM and UTF8NoBOM to the acceptable values for Encoding parameter to the KeyValuePairFile and ReplaceText.

This Pull Request (PR) fixes the following issues

• Fixes Add ability to specify whether UTF8 files have a BOM or not #56

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).
• Resource parameter descriptions added/updated in schema.mof
  and comment-based help.
• Comment-based help 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.

This change is