require syntax

In the readme :
```
var Draggable = require ('Draggable');
```
should be :
```
var Draggable = require ('draggable');
```
(in lowercase)
It will not build except on windows with the uppercase D

Open the README and find the require syntax example for Draggable. Change the module name in that example to lowercase, then verify that the documented command matches the package name and avoids the case-sensitive build failure described in the issue.

Written by the indexing model from the issue text.