I have the plus gallery and I have downloaded the newer version to update the plugin.
I checked the documentation and it says that the last version is May 2015 although in Codecanyon the latest version was updated April 2016.

I just want to know that my download from codecanyon today is the newest version and I just need to deactivate the plugin, Delete all the files and reupload the new files to the Plugin folder.

Note: the folder name of the new download  is different than the folder name which I currently have.