[GitHub] jena issue #470: Rename README to README.md

[nirajpatel]

Github user nirajpatel commented on the issue:

    https://github.com/apache/jena/pull/470
  
    The only reasoning behind renaming is to have it render nicely in the 
GitHub UI and IntelliJ
    
    Before:
    https://github.com/apache/jena/blob/master/README
    
    After: 
https://github.com/apache/jena/blob/5f6fd0cb710420ce17e87c28236bbfa056a485e3/README.md


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