Move this to ajax lesson?

[raq929]

• Use $.ajax() over $.get(). The $.ajax version is preferable because of its use of promises which we'll cover later on in the course.

This is in the best practices section of the README, but this lesson is before the ajax lessons, so I don't think it makes much sense here.

[gaand]

@raq929 It's also doesn't apply until we're using jQuery 3. Definitely remove from this material.