Fixed some typos + updated the code to the PSR2 standard

[Xety]

Does we need to add to the readme the explanation for the slugField() function that is used to define the slugField ?

public function slugField()
{
    return 'slug';
}

Btw, why this method is defined in protected in the core but not the slugStrategy ? https://github.com/kirkbushell/eloquence/blob/master/src/Behaviours/Sluggable.php#L114-L117

[kirkbushell]

@Xety I think slugStrategy was originally used outside the model, before I found out about bootstrapped methods in traits :) That could be changed to protected now.

[kirkbushell]

Sorry, but there's a few changes you've made that I do not actually agree with. I started writing a review but there's no changes here that I think the project needs, and in some cases makes the documentation less readable, not moreso.