Now you can use an amazing free app from the app store called Offline Pages, this app enables you to browse internet pages by your iPad offline without internet connection, I think at minimum you have to install it in your iPad device, You may need it one day.
What’s New in Version 1.1
The app automatically restores position in page where you left off reading.
Allows editing titles of saved pages.
Allows manual refresh of saved pages.
Displays how much memory is consumed by each pages.
Download this app free from Here.