II. Write-Tests 08 seems to be missing?

First of all these are great exercises to learn testing with JEST. 
So thanks for that!

##Possible Issue:
Assignment/exercise file for '08-???' seems to be missing?
My assumption is that `async-test1.js` suppose to be in '08-???'.
I am not sure about this, just wanted to point out we skip towards 09-Async-test.
