Moving the credits into the window title
Adding asserts, audio palls and streaming

Asserts test for assets folder to ensure it exists
Adding test that there is at least one file in the assets folder.
Adding a pcall that will not add files that do not load properly.
Setting the newSource to use stream instead of static to avoid unneeded overhead.
Shorten title
Merge branch 'josefnpat-master', close #1