Add Documentation/block/00-INDEX

Add Documentation/block/00-INDEX

Signed-off-by: Rob Landley <rob@landley.net>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

Documentation/block/00-INDEX

+00-INDEX
+	- This file
+as-iosched.txt
+	- Anticipatory IO scheduler
+barrier.txt
+	- I/O Barriers
+biodoc.txt
+	- Notes on the Generic Block Layer Rewrite in Linux 2.5
+capability.txt
+	- Generic Block Device Capability (/sys/block/<disk>/capability)
+deadline-iosched.txt
+	- Deadline IO scheduler tunables
+ioprio.txt
+	- Block io priorities (in CFQ scheduler)
+request.txt
+	- The members of struct request (in include/linux/blkdev.h)
+stat.txt
+	- Block layer statistics in /sys/block/<dev>/stat
+switching-sched.txt
+	- Switching I/O schedulers at runtime