Update README.md

Add some extra debug statements for APC test

Test kernel-mode APCs

Add executive interface for APCs

Kernel-mode APC implementation finished

Add a lock to microkernel threads

Implement some APC stub code

Define microkernel API for APCs

Add autoreset mechanics to event_signal()

Remove boot and LAPIC debug prints

Triple fault in kernel ELF loading

Successfully reaches BAL on test Dell

Fix dumb typo

Clear top bits of EDX in ext2_finddir in VBR

Fixed an EXT2 VBR multiplication overflow