fixed build compile error because of editor refs in sample scripts

fixed build compile error because of editor refs in sample scripts

increased the version to 1.3.0 and added more default unity extension…

…s to check while regenerating or applying GUIDs

increased the version to 1.3.0 and added more default unity assets to…

… check

updates from master

updated image in readme

Added a new readme file to the package root with exchanged image urls

Added yet another (same) README file to the packages root folder and …

…exchanged the image urls

nullref error fix when no active scene was found

nullref error fix when no active scene was found