String left pad
npm install cf-left-pad
String left pad.
``bash$ npm install cf-left-pad`
bash$ npm install cf-left-pad
`jsleftpad = require('cf-left-pad')
jsleftpad = require('cf-left-pad')
leftpad('foo', 5)// => " foo"
leftpad('foobar', 6)// => "foobar"
leftpad(1, 2, 0)// => "01"``