Added "Blade variable" name convention item.

[serious-angel]

Dear Developers,

Thank you for the miracles! ✨

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Added "Blade variable" name convention item.

Rationale

Apparently, there's no convention for the following case:

use Illuminate\Support\Facades\View;

return View::make('some-page', ['someData' => 'Aurescere']);

Which is for the naming of the variable, which is to be available in a blade file:

<span>{{ $someData }}</span>

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Best and kind regards

[serious-angel]

The most close related case found is the following: https://laracasts.com/discuss/channels/laravel/question-does-naming-convention-when-passing-parameter-are-matter