example(protractor-appium):adding an example for protractor with appi…

[sudharsan-selvaraj]

1. Created a simple hybrid android application of the calculator app for demo purpose.
2. provided examples for capabilities to be used with protractor for running tests in Hybrid apps and Mobile Chrome browser.

[googlebot]

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[sudharsan-selvaraj]

I signed it!

[googlebot]

CLAs look good, thanks!

[igniteram]

@cnishina circile ci tests are failing due to some weird reasons, are you still maintaining this repo? If you are occupied then I would love to be a collaborator 👍