Reimplemented PIT Timer. Sleep is now a syscall. Also made docs/ that contains some info so i don't forget.

docs/memory.txt

@@ -0,0 +1,8 @@
+--- Memory Map ---
+0x1000  - Kernel
+0x6000  - Font
+0x7000  - Filetable (0x7c00 - Bootloader)
+0x8500  - ACPI Memory map
+0x9000  - VBE Mode Info Block
+0x30000 - Memory manager memmap
+

docs/syscalls.txt

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+=== System Calls === 
+
+Syscall handlers are prefixed by 'sys_'
+Syscalls can be called using interrupt 0x80
+The EAX register should countain a syscall number
+
+Here's a list of syscalls: (and their numbers)
+
+syscall(0) : Sleep()
+    Args: EBX - Number of miliseconds to sleep for
+