Add some docs and test and cmake support

examples/test.asm

@@ -0,0 +1,7 @@
+main:
+.LFB0:
+	.cfi_startproc
+	movb	$1, 53280
+	xorl	%eax, %eax
+	ret
+

examples/test.c

@@ -0,0 +1,4 @@
+int main()
+{
+  *((char *)0xd020) = 0x01; // set the border color to white on a c64
+}