AngularJS ng-include Directive
Definition and Usage
The ng-include directive includes HTML from an external file.
The included content will be included as childnodes of the specified element.
The value of the ng-include attribute can also be an expression, 
returning a filename.
By default, the included file must be located on the same domain as the document.
Syntax
    <element ng-include="filename" onload="expression" 
    autoscroll="expression" ></element>
The ng-include directive can also be used as an element:
    <ng-include src="filename" onload="expression" 
    autoscroll="expression" ></ng-include>
    
Supported by all HTML elements.
Parameter Values
| Value | Description | 
|---|---|
| filename | A filename, written with apostrophes, or an expression which returns a filename. | 
| onload | Optional. An expression to evaluate when the included file is loaded. | 
| autoscroll | Optional. Whether or not the included section should be able to scroll into a specific view. | 

