IGNITE-8022 Need to add README.txt for ignite-direct-io - Fixes #4815.
IGNITE-8022 Need to add README.txt for ignite-direct-io - Fixes #4815.

Signed-off-by: Dmitriy Pavlov <ae7d06a49dd8c789d008d2911b0ac33f303f4c7b@apache.org>

ilantukh/ignite,BiryukovVA/ignite,apache/ignite,ilantukh/ignite,ascherbakoff/ignite,shroman/ignite,shroman/ignite,NSAmelchev/ignite,andrey-kuznetsov/ignite,chandresh-pancholi/ignite,BiryukovVA/ignite,ptupitsyn/ignite,ascherbakoff/ignite,apache/ignite,NSAmelchev/ignite,SomeFire/ignite,daradurvs/ignite,ptupitsyn/ignite,NSAmelchev/ignite,ptupitsyn/ignite,nizhikov/ignite,apache/ignite,ptupitsyn/ignite,chandresh-pancholi/ignite,BiryukovVA/ignite,chandresh-pancholi/ignite,samaitra/ignite,nizhikov/ignite,daradurvs/ignite,andrey-kuznetsov/ignite,daradurvs/ignite,apache/ignite,samaitra/ignite,apache/ignite,daradurvs/ignite,chandresh-pancholi/ignite,ascherbakoff/ignite,nizhikov/ignite,BiryukovVA/ignite,xtern/ignite,andrey-kuznetsov/ignite,apache/ignite,BiryukovVA/ignite,andrey-kuznetsov/ignite,NSAmelchev/ignite,samaitra/ignite,ascherbakoff/ignite,nizhikov/ignite,SomeFire/ignite,andrey-kuznetsov/ignite,ptupitsyn/ignite,samaitra/ignite,ilantukh/ignite,daradurvs/ignite,ilantukh/ignite,shroman/ignite,ilantukh/ignite,xtern/ignite,daradurvs/ignite,SomeFire/ignite,chandresh-pancholi/ignite,ilantukh/ignite,samaitra/ignite,SomeFire/ignite,chandresh-pancholi/ignite,SomeFire/ignite,shroman/ignite,apache/ignite,andrey-kuznetsov/ignite,ascherbakoff/ignite,apache/ignite,SomeFire/ignite,nizhikov/ignite,xtern/ignite,xtern/ignite,SomeFire/ignite,samaitra/ignite,BiryukovVA/ignite,nizhikov/ignite,shroman/ignite,ilantukh/ignite,ilantukh/ignite,nizhikov/ignite,andrey-kuznetsov/ignite,BiryukovVA/ignite,shroman/ignite,samaitra/ignite,andrey-kuznetsov/ignite,SomeFire/ignite,shroman/ignite,daradurvs/ignite,chandresh-pancholi/ignite,NSAmelchev/ignite,nizhikov/ignite,xtern/ignite,daradurvs/ignite,ilantukh/ignite,ascherbakoff/ignite,daradurvs/ignite,apache/ignite,samaitra/ignite,samaitra/ignite,andrey-kuznetsov/ignite,ascherbakoff/ignite,nizhikov/ignite,xtern/ignite,shroman/ignite,BiryukovVA/ignite,shroman/ignite,xtern/ignite,NSAmelchev/ignite,daradurvs/ignite,NSAmelchev/ignite,andrey-kuznetsov/ignite,chandresh-pancholi/ignite,NSAmelchev/ignite,SomeFire/ignite,ascherbakoff/ignite,BiryukovVA/ignite,shroman/ignite,ilantukh/ignite,BiryukovVA/ignite,SomeFire/ignite,ptupitsyn/ignite,ptupitsyn/ignite,NSAmelchev/ignite,ascherbakoff/ignite,xtern/ignite,samaitra/ignite,ptupitsyn/ignite,xtern/ignite,ptupitsyn/ignite,ptupitsyn/ignite,chandresh-pancholi/ignite