Review Request: OOZIE-560 refactor readme.txt for git display

[Angelo K. Huang]

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Review request for oozie.


Summary
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update readme and release log


This addresses bug OOZIE-560.
    https://issues.apache.org/jira/browse/OOZIE-560


Diffs
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  /trunk/readme.txt 1170915 
  /trunk/release-log.txt 1170915 

Diff: https://reviews.apache.org/r/1915/diff


Testing
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Thanks,

Angelo K.