Fixing the documentation and start pages

i have been away for a while and kinda forgot about some elements on how to setup stuff for pokitto and noticed the page is a bit outdated now i am assuming most have switched to platformIO or another local compiler over the mbed online compiler

also finding out all the features of the library are ether a bit outdated or just hard to find, i dint even know where my own graphics mode went XD

also things like SDFileSystem have qwerks and you would have to start seeking around to what to do

asking for everyone who can to help out update the guides and documentation and write up stuff on there draw modes since i think there is just no awareness of them right now