Joy/ref 5768/df to f#22

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PMjoydas wants to merge 3 commits intomasterfrom

joy/REF-5768/DF_to_F

Commits on Mar 2, 2019

[REF-5768] component to Read file into DataFrame
Dhananjoy Das
committed
[REF-5768] component: Save DataFrame to file
Dhananjoy Das
committed
[REF-576] minor: fix file-name input string
Dhananjoy Das
committed