Info how rooting is done without using a computer or usb method

I have a hkc P771A tablet and I need to know if there are apps,tools,or utilities that will root my tablet without using a computer or USB method?
Also heard on the news a couple of days ago that major phone/tablet makers will be allowing unlocking under certain guidelines and some will even do the unlocking for you.anyone else heard this? if so is Google one of them?