Github user Madhuka commented on the pull request:
https://github.com/apache/incubator-zeppelin/pull/203#issuecomment-132867010
Data Validation Document is Updated with below sub titles.
* Where the data validator is used in zeppelin?
* Why the data validator is used?
* Why the data validator is important?
* How Data Validation is done?
* Adding new Data Range Validation
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