Release/3.0.0 (#120)

* set version to 3.0.7

* set relative path to images

* update readme.md

* remove RegistryTool.cs

* code cleanup

prepare version 2.3

update package version

update publishing.md

update screen captures

coffee cup capture

prepare 1.2 release

prepared 1.1 publication

changed clickonce version to 1.0.0