Add mkfifo stuff

README

@@ -37,6 +37,7 @@ tty
 The following tools are working, but not complete or POSIX-compliant:
 
 cal
+mkfifo
 sh
 wc
 

TODO

@@ -17,6 +17,12 @@ cal can't show calendar for whole year
     This needs to be done eventually.
     -Kat
 
+mkfifo mode argument doesn't work?
+    I tried running ./mkfifo -m ug=rwx hi and got a fifo named hi
+    with the mode 0750. I'm not sure exactly what happened there,
+    but it needs to be fixed.
+    -Kat
+
 TODOS
 *****
 
@@ -103,7 +109,7 @@ make	     >
 man	         >
 mesg	     >
 mkdir	     >
-mkfifo	     >
+mkfifo	   O    X M
 mknod	     >
 more	     >
 mv	         >