Request to update examples in Protractor API docs for async/await

[vsravuri]

Some of the examples provided in Protractor API docs should be updated to include how to use the API methods with async/await.

http://www.protractortest.org/#/api

It will be helpful if async/await examples are provided for below API methods. I use some of the API methods extensively in my code, refactoring the code to make it work with async/await.

• Filter
  http://www.protractortest.org/#/api?view=ElementArrayFinder.prototype.filter

• Map
  http://www.protractortest.org/#/api?view=ElementArrayFinder.prototype.map

• Each
  http://www.protractortest.org/#/api?view=ElementArrayFinder.prototype.each

[cnishina]

Sure. I'll add this to the list.

[devoto13]

I'll work on it.

[cnishina]

Closed with #5081