Asynchronous interaction

Fixed M53 warning on microtask.

``
Invoking 'alert()' during microtask execution is deprecated and will be removed
in M53, around September 2016. See
https://www.chromestatus.com/features/5647113010544640 for more details.
`

Installation
------------
`javascript
npm install async-interaction
`

Usage
-----
`javascript
// ES5
var asyncAlert = require('async-interaction').asyncAlert;

// ES6
import { asyncAlert } from 'async-interaction';

// Some asynchronous action
request.then(res => {
if (res.somethingWrong) {
asyncAlert('Error!');
}
})

`

Documentation
-------------
asyncAlert
`javascript
var asyncAlert = require('async-interaction').asyncAlert;
asyncAlert('Error!');
`

asyncConfirm
`javascript
var asyncConfirm = require('async-interaction').asyncConfirm;
asyncConfirm('OK?', res => {
console.log('Answer is' + res);
});
`

asyncPrompt
`javascript
var asyncPrompt = require('async-interaction').asyncPrompt;
asyncConfirm('What is your name?', res => {
console.log('Your name is ' + name);
});
``