Manages the saving and loading of template files.
Example
var TemplateIO = require('template-io.js');
// a generic Viewer constructor
function Viewer(opts) {
    var myTemplateIO = TemplateIO(this);
}
Fires:
Listens to Events:
(require("template-io"))(viewer)
Creates the template IO module.
Parameters:
| Name | Type | Description | 
|---|---|---|
viewer | 
Core | 
 The core viewer to which the module will attach.  | 
Methods
destroy()
Destroys the module.
