Access to modifying apacheignite.readme.io

[Ilya Kasnacheev]

Hello Igniters!

I would like to have write access for readme.io to address issues like
https://issues.apache.org/jira/browse/IGNITE-6775

And I've also noticed some lose/loose and its/it's which I could correct.

Regards,

-- 
Ilya Kasnacheev