I uploaded a plugin before in Piwik 3.0.4 and noticed a
.htacces file was not in the plugin directory after installing it even though it was included in the zip.
We need to try and reproduce this again and if needed fix it.
According to various reports on the internet ZipArchive::extractTo is not able to extract hidden files on linux.
Wouldn't it be a possibility to create the file up on install of the plugin within the PHP code?
creating it now on install and activate. Will also be needed to be done on plugin update which I still need to add. If it is not possible to fix we need to document it somewhere I reckon