Exposed "pageGrabberEnabled" configuration setting in "PSPDFKitPlugin/PSPDFKitPlugin.m" too.
Exposed "pageGrabberEnabled" configuration setting in "PSPDFKitPlugin/PSPDFKitPlugin.m" too.

This was missed in #40.

PSPDFKit/Cordova-iOS,PSPDFKit/Cordova-iOS,PSPDFKit/Cordova-iOS,PSPDFKit/Cordova-iOS,PSPDFKit/Cordova-iOS