Image Attachments
 
 The ScenarioObserver.bindImageAttachments() method allows image files attached to the scenario or app to be displayed in a custom view.  
 
Define an HTML img tag in the view, and specify the filename of the attachment using the data-attachment-filename attribute (specifying the attachment by tag name is not supported).
 If no attachment exists with the specified filename, the image will be replaced with a fallback message, 
 The attachment is not currently available. An alternative message can be specified using the data-fallback attribute. For example: 
 
 
<h3>Results chart</h3>
<img id="results-chart"
     data-attachment-filename="chart.png"
     data-fallback="The chart is not available">
 
 Finally, create a scenario observer to populate the img tags in the view: 
 
                var view = insight.getView();
view.withFirstScenario()
    .bindImageAttachments('#results-chart')
    .start(); The normal 
 width and 
 height attributes can optionally be used to specify the size of the image. 
 
