Fix copy of the NAppUpdate.Framework.dll, to the updater.exe directory.
Add a valid UpdateFeed.xml URL to our server for a good first test experience.
Fix Path seperator on Unix.
Merge remote-tracking branch 'remotes/pcdummy/add-valid-updatefeed-url'
Merge remote-tracking branch 'remotes/pcdummy/Utils_Filesystem-Path_Seperator'
Finaly fix Path Seperator.
Improve the Linux build script.
Merge branch 'Utils_Filesystem-Path_Seperator'
Merge branch 'build_linux.sh'