Added IsValid check RuleSet
Updated BL menu behavior and design
Refactorings
Renaming classes
Updated NuGet packages
Removed unused files
Removed "Preview" from VS product name
Added license to solution root
Pass relative path to LESS parser

Fixes #51
Moved Web Essentials menu down the list
Fixes #115, Fixes #114
Merge remote-tracking branch 'upstream/master'
Fixes squiggly -> element mismatch in unused CSS
Fix for clear usage data not removing tags
Merge pull request #116 from mlorbetske/master

Unused CSS Fixes