Update index.js

[JoeChapman]

Have you considered defining Function.prototype.bind within the module? This implementation still returns the bind. However, like chai, by invoking require, one defines the bind, without needing to assign the return value to a target. Also, don't you like semi-colons?

[Raynos]

This module will not mutate globals.

[JoeChapman]

Ok, but you one must augment the Function prototype for this to be of any use whatsoever. You can't pretend you're not mutating Globals just because you're leaving it up to the user.

[Raynos]

var bind = require('function-bind')

function fn() { ... }

bind.call(fn, self, arg1)

You can use bind perfectly well without globals.