Simple Viz integrated with Paco App

[KavMuthu]

Edit viz controller, directive, data service and HTML to integrate Paco App's data from experiments.json and events.json.

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[BobEvans]

Hi Kavitha, Can you reformat the files to our code guidelines? Then I can merge this pull request. Thanks,Bob

[KavMuthu]

Hi Bob, Sorry for the delay. I have reformatted viz files to include 2 spaces instead of 4 spaces. Thank you!

[BobEvans]

Thanks