- properly performs gpu/backlight reset
- nukes vram so the initrd had to be moved to arm9 memory, and have its size (at least temporarily) limited to 256k
This commit adds an edited README.md to be built into GM9 as user guide.
The scrubbed parts include refs to the GM9 banner, unused MarkDown and
the whole "How to build this / developer info" block.
Links have been replaced with their corresponding anchor text, when
replacing them could be done without altering the sentences' original
meaning.
Certain parts have been further altered, such as the "License"
paragraph, which now includes the full link to GM9's "license.txt".
