Laravel 5.2 Cannot Find Class Definition

I've tried to set up some facade in Laravel 5.2. I've tried to follow a few guides, like these:

• http://ift.tt/1Ldgs7s
• http://ift.tt/1Q5iEAe

I've reviewed some blog posts like this:

• http://ift.tt/1oKSOJ5

Here is a gist of what I've implemented thus far

Problem:

When I try to use my Facade Join::test() I get Class 'X2O\Facades\Join' not found:

Yes, I'm using Whoops!

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