Fix copy command for assets

[joshdover]

The previous cp command resulted in an extra 'assets' directory in the build_path:

build_path
 |- public/
     |- assets/
         |- assets/

[reisub]

@nadarei
Please merge this pull request, I just ran into this issue.

[gabskoro]

Hi @Gerfuls and @reisub, this command will not create and extra assets folder until the assest folder already exits in the public folder, which is not the case here.

[asanghi]

I also see this behaviour.
@gabskoro assets folder already exists though.

[joshdover]

@gabskoro Is there a reason this got reversed in c171bc1?

[gabskoro]

@Gerfuls I just added quotes, looks cleaner for me, nothing else :)