Extention for Array to add method `intersperse` for adding elements in between elements in array
npm install array-intersperseExtention for Array to add method intersperse for adding elements in between elements in array.
``bash`
$ npm install --save array-intersperse
`js
require('array-intersperse');
var arr = [1, 2, 3].intersperse('a');
console.log(arr) // [1, 'a', 2, 'a', 3]
``