Update to compile with latest toolchain

Signed-off-by: Andrew 'Necromant' Andrianov <andrew@ncrmnt.org>
Make hello-world example a led-blinker

Signed-off-by: Andrew 'Necromant' Andrianov <andrew@ncrmnt.org>
Update startup code Makefile

Signed-off-by: Andrew 'Necromant' Andrianov <andrew@ncrmnt.org>
Some more renaming + REDME

Signed-off-by: Andrew 'Necromant' Andrianov <andrew@ncrmnt.org>