CORDOPLUG-235 Document limitations when using the XHR override
CORDOPLUG-235 Document limitations when using the XHR override

arrayBuffer is only support on Android 4.4 and up.

(cherry picked from commit 9f54dc3)

Onegini/cordova-plugin-onegini,Onegini/cordova-plugin-onegini,Onegini/cordova-plugin-onegini