Add note on needing the Pagination plugin to use fetchPage()

[kevindong]

• Related Issues: fetchPage is not a function #1358
• Previous PRs: Add note on needing the Pagination plugin to use fetchPage() #1801

Introduction

This adds a note on needing the Pagination plugin to use the fetchPage() function.

This pull request is a followup to #1801 asking me to open a new PR into the master branch.

Motivation

I needed to paginate the results of a query for a project I was doing. So I did a Ctrl-F through the main Bookshelf docs page and the first result was a link on the sidebar to the main documentation section for the fetchPage function. I thought "cool, this is exactly what I need" and tried it out in my code. But it didn't work. I just got the fetchPage is not a function error. So I did some googling around and found issue #1358. That issue yielded the solution that a plugin was needed. I tried that out and it worked.

Admittedly the docs page does mention in several places that the plugin is needed. But, I think adding this note onto the function documentation would be useful.

Proposed solution

Add a note to the method documentation.

[ricardograca]

👍