fix(ustream): corrects the url for ustream (#215)

* corrects the url for ustream

* check for the presence of www. in the ustream link

* checks for both integer and string

* Update ustream function

removes a return statement

src/js/modules/template.js

@@ -93,7 +93,14 @@ export default {
     if (match.indexOf('/embed/') < 0) {
       id.splice(1, 0, 'embed')
     }
-    return `<div class="ejs-embed ejs-ustream"><iframe src="//www.${id.join('/')}" height="${options.videoHeight}" width="${options.videoWidth}"></iframe></div>`
+
+    //check if '//www.' is there in the link
+    let prefix='';
+    if(match.indexOf('/www\.ustream\.tv/') < 0){
+      prefix=prefix+'//www.';
+    }
+
+    return `<div class="ejs-embed ejs-ustream"><iframe src="${prefix}${id.join('/')}" height="${options.videoHeight}" width="${options.videoWidth}"></iframe></div>`
   },
 
   detailsVimeo (data, fullData, embedUrl) {