I am looking for the exact same feature, thought for me it's for displaying sheet music 2 pages at a time.
Unfortunately, the support for viewing two pages is not present in the current version; But, we have noted down your feature request. And we might consider it for our future release.
When is this gonna to happen? It's been over a year.
Adobe Reader supports the 2-page view mode already on tablets (>8 inch screen) since smaller devices do not give a satisfactory experience when 2 pages are displayed simultaneously. Click here for more details.
The "full screen" feature is coming shortly in the next update.