Merge pull request #2 from CodeDead/release/v2.0.0

Release/v2.0.0

* Added theme previews

* Binding settings

* Bumped version number
* Minor design changes
* Added a message in case the product key could not be retrieved
* Border thickness changes can now be previewed

* Fixed a display issue with the export dialog

* Removal of pdf on release version

* Upgrade to .NET 4.7.1

* Minor design changes

Merge branch 'master' of https://github.com/CodeDead/PK-Finder

* Minor change

* Minor design change

Update README.md