readme update

Author: Bart Sjerps

README.md

@@ -1,4 +1,13 @@
 # asmdisks
 Manage block devices with UDEV
 
-TBD.
+asmdisks provides a way to manage Oracle ASM volumes using Linux UDEV.
+It is an alternative to Oracle ASMLib.
+You can use a combination of entire disks, partitions or mapper
+(including multipath) devices to configure as block devices for
+Oracle ASM (or other purposes such as destructive IOPS performance testing)
+Also supports DellEMC Powerpath and DellEMC ScaleIO volumes.
+
+For a more detailed description, visit 
+[wiki page](http://outrun.nl/wiki/ASMDisks)
+