Ignite documentation process

[Artem Budnikov]

Hi Igniters,

Please take a look at the changes in the "How to Contribute" procedure 
[1] related to Ignite documentation. I just reflected there what we 
discussed earlier about our documentation process. Please see this 
thread for more information [2].


[1]: 
https://cwiki.apache.org/confluence/display/IGNITE/How+to+Contribute#HowtoContribute-Documentingaticket

[2]: 
apache-ignite-developers.2346864.n4.nabble.com/Re-Documenting-Ignite-tt32746.html


Cheers,
Artem