Asset bundle browser BUILD files with extension

I use Asset bundle browser with my WEBGL project but when I build the assets, all generated files have no extension and it's a problem publish them to my web site in a shared hosting environment.

Is it possible to add automatically a custom extension to assets when build them? (eg .unity3d)
(I did it by renaming all files manually !)

Or, Has anyone other solution for that problem?

 

That would be a good idea, in the meanwhile change the extension manually with the explorer